[New!] Universal correlation between H-linear magnetoresistance and T-linear resistivity in high-temperature superconductors
J. Ayres, M. Berben, C. Duffy, R. D. H. Hinlopen, Y.-T. Hsu, A. Cuoghi, M. Leroux, I. Gilmutdinov, M. Massoudzadegan, D. Vignolles, Y. Huang, T. Kondo, T. Takeuchi, S. Friedemann, A. Carrington, C. Proust, and N. E. Hussey
Nat. Commun. 15, 8406 (2024) [7 pages].

[New!] Understanding the Anomalous Thermoelectric Behavior of Fe-V-W-Al-Based Thin Films
K. Yadav, Y. Tanaka, A. K. Ang, K. Hirose, M. Adachi, M. Matsunami, and T. Takeuchi
ACS Appl. Mater. Interfaces 16, 50576 (2024) [11 pages].

Significant improvement in sensitivity of an anomalous Nernst heat flux sensor by composite structure
H. Imaeda, R. Toida, T. Takeuchi, H. Awano, and K. Tanabe
Appl. Phys. Lett. 125, 044101 (2024) [6 pages].

Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography
S. Smit, E. Mauri, L. Bawden, F. Heringa, F. Gerritsen, E. van Heumen, Y. K. Huang, T. Kondo, T. Takeuchi, N. E. Hussey, M. Allan, T. K. Kim, C. Cacho, A. Krikun, K. Schalm, H.T.C. Stoof, and M. S. Golden
Nat. Commun. 15, 4581 (2024) [8 pages].

Tunable magnetoelectronic properties in Bi³⁺ substituted YCrO₃
S. K. Raya, A. Patia, P. Sahooa, A.K. Sahooa, S. Singh, T. Takeuchi, and S. Dasha
Physica B 685, 416018 (2024) [8 pages].

Structural study of crystalline and amorphous phases of Si_0.65Ge_0.35B_x (x = 0, 0.01, 0.05, 0.10) alloy prepared by long-time mechanical alloying
S. Hiroi, K. Ohara, O. Muthusamy, H. Nakajima, S. Mori, and T. Takeuchi
J. Non Cryst. Solids 631, 122914 (2024) [6 pages].

Revealing magnetic and physical properties of TbFe_4.4Al_7.6: experiment and theory
S. S. Samatham, S. Singh, S. Sunil Kumar Reddy , S. Kumar A, S. Yadam, P. D. Babu, T. Takeuchi, and K. G. Suresh
J. Phys.: Condens. Matter 36, 205802 (2024) [10 pages].

Metaheuristic aided structural topology optimization method for heat sink design with low electromagnetic interference
M. Al Ali, M. Shimoda, B. Benaissa, M. Kobayashi, T. Takeuchi, A. Al-Shawk, and S. Ranjbar
Sci. Rep. 14, 3431 (2024) [15 pages].

Composition, time, temperature, and annealing-process dependences of crystalline and amorphous phases in ductile semiconductors Ag₂S_1-xTe_x with x = 0.3-0.6
K. Sato, K. Hirata, M. Matsunami, and T. Takeuchi
AIP Adv. 14, 015303 (2024) [9 pages].

Improvement of thermoelectric performance of flexible compound Ag₂S_0.55Se_0.45 by means of partial V-substitution for Ag
K. Sato, S. Singh, I. Yamazaki, K. Hirata, A. K. Ang, M. Matsunami, and T. Takeuchi
AIP Adv. 13, 125206 (2023) [9 pages].

Huge Peltier conductivity in valence fluctuating material Yb₃Si₅
K. Kuga, K. Hirata, M. Matsunami, and T. Takeuchi
Appl. Phys. Lett. 123, 202201 (2023) [5 pages].

Reduction of working temperature for the large magnitude in thermoelectric dimensionless figure of merit of Ag_2-xCu_xS
K. Sato, G. Kim, K. Murase, S. Singh, K. Hirata, D. Byeon, M. Matsunami, and T. Takeuchi
Jpn. J. Appl. Phys. 62, 111002 (2023) [8 pages].
[Congrats!] Selected as Spotlights 2023 in JJAP.

Development of Cu₂Se/Ag₂(S,Se)-Based Monolithic Thermoelectric Generators for Low-Grade Waste Heat Energy Harvesting
A. K. R. Ang, I. Yamazaki, K. Hirata, S. Singh, M. Matsunami, and T. Takeuchi
ACS Appl. Mater. Interfaces 15, 46962 (2023) [9 pages].

First‐Principles Study on Electronic and Thermal Transport Properties of FeRuTiX Quaternary Heusler Compounds (X= Si, Ge, Sn)
S. Singh, S. Singh, B. Srinivasan, A. Kumar, N. Bijewar, T. Mori, T. Takeuchi, J.-f. Halet
Z. Anorg. Allg. Chem. 649, e202300080 (2023) [9 pages].

Orbital hybridisation effects in B2 phase Cr doped Co₂MnAl
S. Pathak, S. Singh, S. Khalid, K. Kuga, T. Takeuchi, R. Bindu
J. Phys.: Condens. Matter 35, 395401 (2023) [10 pages].

Thermoelectric performance of Fe₂V_0.9W_0.1Al thin films deposited on n-type Si substrates
F. Machda, S. Singh, K. Kuga, A. K. R. Ang, M. Matsunami, and T. Takeuchi
Jpn. J. Appl. Phys. 62, 055502 (2023) [8 pages].

Lattice effects on the physical properties of half-doped perovskite ruthenates
J. Brar, S. Singh, K. Kuga, P. Sharma, M. Bharath, T. Takeuchi, and R. Bindu
J. Phys.: Condens. Matter 35, 195402 (2023) [11 pages].

Nanostructured Si–Ge thermoelectric material for 1200 V/W highly sensitive infrared thermopile sensor device
K. Kakuyama, K. Hirose, M. Adachi, T. Takeuchi, and M. Kimata
AIP Adv. 13, 035128 (2023) [4 pages].

Significantly reduced lattice thermal conductivity with anharmonic lattice vibrations and band edge effect in electronic thermal conductivity in Ag₂S_1-xSe_x (0 ≤ x ≤ 0.6)
K. Hirata, S. Singh, and T. Takeuchi
AIP Adv. 13, 035122 (2023) [10 pages].
[Congrats!] Selected as Featured article.

Puddle formation and persistent gaps across the non-mean-field breakdown of superconductivity in overdoped (Pb,Bi)₂Sr₂CuO_6+δ
W. O. Tromp, T. Benschop, J.-F. Ge, I. Battisti, K. M. Bastiaans, D. Chatzopoulos, A. H. M. Vervloet, S. Smit, E. van Heumen, M. S. Golden, Y. Huang, T. Kondo, T. Takeuchi, Y. Yin, J. E. Hoffman, M. A. Sulangi, J. Zaanen, and M. P. Allan
Nature Materials 22, 703-709 (2023) [8 pages].

Thermal conduction in titanium-chromium oxide natural superlattices with an ordered arrangement of nearly pristine interfaces
S. Sugimoto, G. Kim, T. Takeuchi, M. Tagawa, T. Ujihara, and S. Harada
J. Alloys Compd. 934, 167915 (2023).

Effect of the annealing treatment on structural and transport properties of thermoelectric Sm_y(Fe_xNi_1?x)₄Sb₁₂ thin films
G. Latronico, P. Mele, C. Sekine, P. S. Wei, S. Singh, T. Takeuchi, C. Bourgès, T. Baba, T. Mori, P. Manfrinetti, and C. Artini
Nanotechnology 34, 115705 (2023) [12 pages].

Magneto-thermal conductivity effect and enhanced thermoelectric figure of merit in Ag₂Te
K. Hirata, K. Kuga, M. Matsunami, M. Zhu, J. P. Heremans, and T. Takeuchi
AIP Adv. 13, 015016 (2023) [9 pages].
[Congrats!] Featured on the cover of ADV's January 2023 issue.

Valence fluctuation in Yb₃Si₅ probed by synchrotron x-ray photoemission spectroscopy
K. Kuga, M. Matsunami, H. Fujiwara, G. Nosue, A. Ose, A. Sekiyama, A. Yasui, S. Hamamoto, M. Oura, and T. Takeuchi
Jpn. J. Appl. Phys. 62, SD1014 (2023) [4 pages].

Thermoelectric properties of higher manganese silicide consolidated by flash spark plasma sintering technique
S. Choi, K. Kubo, N. Uchiyama, and T. Takeuchi
J. Alloys Compd. 921, 166104 (2022).

Multicritical phase diagram of PrMn_1?xSb₂ with two interacting magnetic elements
T. Urata, Y. Takahashi, K. Kuga, T. Takeuchi, and H. Ikuta
Phys. Rev. B 106, 184401 (2022) [6 pages].

Large antiferromagnetic fluctuation enhancement of the thermopower at a critical doping in magnetic semimetal
A. Mohamed, Y. Fujisawa, T. Onishi, M. Pardo-Almanza, M. Couillard, K. Harada, T. Takeuchi, and Y. Okada
Phys. Rev. B 106,155122 (2022) [7 pages].

Synthesis and structural link to the electronic and magneto-transport properties of spin–orbit Mott insulator Sr₂IrO₄
P. Sharma, S. Singh, K. Kuga, T. Takeuchi, and R. Bindu
J. Phys.: Condens. Matter 34, 435402 (2022) [9 pages].

Strange metal electrodynamics across the phase diagram of cuprates
E. van Heumen, X. Feng, S. Cassanelli, L. Neubrand, L. de Jager, M. Berben, Y. Huang, T. Kondo, T. Takeuchi, and J. Zaanen
Phys. Rev. B 106, 054515 (2022) [18 pages].

Enhanced Performance of Monolithic Chalcogenide Thermoelectric Modules for Energy Harvesting via Co-optimization of Experiment and Simulation
H. Lai, S. Singh, Y. Peng, K. Hirata, M. Ryu, A. K. R. Ang, L. Miao, and T. Takeuchi
ACS Appl. Mater. Interfaces 14, 38642–38650 (2022) [9 pages].

Electronic structure of silver chalcogenides investigated by hard x-ray photoemission spectroscopy and density functional theory calculations
K. Sato, K. Hirata, S. Singh, K. Kuga, F. Ogawa, M. Matsunami, and T. Takeuchi
J. Appl. Phys. 132, 045104 (2022) [5 pages].

Magnetic behavior of Ru substituted skyrmion metal MnSi
S. S. Samatham, S. Singh, A. K. Patel, S. S. K. Reddy, T. Takeuchi, and K. G. Suresh
J. Phys.: Condens. Matter 34, 345801 (2022) [8 pages].

Unravelling the phonon scattering mechanism in half-Heusler alloys ZrCo_1?xIr_xSb (x= 0, 0.1 and 0.25)
K. Yadav, S. Singh, O. Muthuswamy, T. Takeuchi, and K. Mukherjee
J. Phys.: Condens. Matter 34, 035702 (2022) [6 pages].

Anomalous dependence of thermoelectric parameters on carrier concentration and electronic structure in Mn-substituted Fe₂CrAl Heusler alloy
K. Yadav, S. Singh, O. Muthuswamy, T. Takeuchi, and K. Mukherjee
Phil. Mag. 102, 357-374 (2022) [18 pages].

Synergetic Enhancement of the Power Factor and Suppression of Lattice Thermal Conductivity via Electronic Structure Modification and Nanostructuring on a Ni- and B-Codoped p-Type Si-Ge Alloy for Thermoelectric Application
O. Muthusamy, S. Singh, K. Hirata, K. Kuga, S. K. Harish, M. Shimomura, M. Adachi, Y. Yamamoto, M. Matsunami, and T. Takeuchi
ACS Appl. Electron. Mater. 3, 5621-5631 (2021) [11 pages].

Simultaneous enhancements of thermopower and electrical conductivity in quasi-one-dimensional α-YbAlB₄ single crystal
K. Kuga, M. Matsunami, S. Singh, S. Nakatsuji, and T. Takeuchi
Appl. Phys. Lett. 119, 223905 (2021) [6 pages].

Capacitor-Type Thin-Film Heat Flow Switching Device
K. Hirata, T. Matsunaga, S. Singh, M. Matsunami, and T. Takeuchi
Jpn. J. Appl. Phys. 60, 124004 (2021) [7 pages].

Synthesis and Characterization of Al-and SnO₂-Doped ZnO Thermoelectric Thin Films
G. Latronico, S. Singh, P. Mele, A. Darwish, S. Sarkisov, S. W. Pan, Y. Kawamura, C. Sekine, T. Baba, T. Mori, T. Takeuchi, A. Ichinose, S. Wilson
Materials 14, 6929 (2021) [17 pages]

Investigation on the power factor of skutterudite smy (Fe_xNi_1-x)₄Sb₁₂ thin films: Effects of deposition and annealing temperature
G. Latronico, P. Mele, C. Artini, P. Manfrinetti, S. W. Pan, Y. Kawamura, C. Sekine, S. Singh, T. Takeuchi, T. Baba, C. Bourgès, T. Mori
Materials 14, 5773 (2021) [15 pages]

Reinforcement of power factor in N-type multiphase thin film of Si_1?x?yGe_xSn_y by mitigating the opposing behavior of Seebeck coefficient and electrical conductivity
H. Lai, Y. Peng, J. Gao, H. Song, M. Kurosawa, O. Nakatsuka, T. Takeuchi, L. Miao
Appl. Phys. Lett. 119, 113903 (2021) [6 pages].

Incoherent transport across the strange-metal regime of overdoped cuprates
J. Ayres, M. Berben, M. ?ulo, Y-T. Hsu, E. van Heumen, Y. Huang, J. Zaanen, T. Kondo, T. Takeuchi, J. R. Cooper, C. Putzke, S. Friedemann, A. Carrington, N. E. Hussey
Nature 595, 661-666 (2021) [22 pages].

Reduced Hall carrier density in the overdoped strange metal regime of cuprate superconductors
C. Putzke, S. Benhabib, W. Tabis, J. Ayres, Z. Wang, L. Malone, S. Licciardello, J. Lu, T. Kondo, T. Takeuchi, N. E. Hussey, J. R. Cooper, A. Carrington
Nat. Phys. 17, 826–831 (2021) [5 pages].

Anomalous vortex liquid in charge-ordered cuprate superconductors
Yu-Te Hsu, Maarten Berben, Matija ?ulo, Seiji Adachi, Takeshi Kondo, Tsuneshiro Takeuchi, Yue Wang, Steffen Wiedmann, Stephen M. Hayden, and Nigel E. Hussey
Proc. Natl. Acad. Sci. U.S.A. 118, e2016275118 (2021) [6 pages].

Mixed-phase effect of the high Seebeck coefficient and low electrical resistivity in the Ag₂S
G. Kim. D. Byeon, S. Singh, K. Hirata, S. Choi, M. Matsunami, and T. Takeuchi
J. Phys. D: Appl. Phys. 54, 115503 (2021) [7 pages].

A Field Effect Heat Flow Switching Device
T. Matsunaga, K. Hirata, S. Singh, M. Matsunami, and T. Takeuchi
Mater. Trans. 62, 16-19 (2021) [4 pages].

Development of High-Performance Solid-State Thermal Diodes Using Unusual Behavior of Thermal Conductivity Observed for Ag₂Ch (Ch = S, Se, Te)
K. Hirata, T. Matsunaga, S. Singh, M. Matsunami, and T. Takeuchi
Mater. Trans. 61, 2402-2406 (2020) [5 pages].

Crossover in periodic length dependence of thermal conductivity in 5d element substituted Fe₂VAl-based superlattices
S. Choi, S. Hiroi, M. Inukai, S. Nishino, R. Sobota, D. Byeon, M. Mikami, E. Minamitani, M. Matsunami, and T. Takeuchi
Phys. Rev. B 102, 104301 (2020) [10 pages].

High Dimensionless Figure of Merit ZT = 1.38 Achieved in p-Type Si–Ge–Au–B Thin Film
M. Adachi, S. Nishino, K. Hirose, M. Kiyama, Y. Yamamoto, and T. Takeuchi
Mater. Trans. 61, 1014-1019 (2020) [6 pages].

Effects of 5d-heavy element partial substitution on thermal transport in Fe₂VAl thin films
S. Choi, S. Hiroi, M. Inukai, S. Nishino, R. Sobota, D. Byeon, M. Mikami, M. Matsunami, and T. Takeuchi
Phys. Rev. B 101, 104312 (2020) [8 pages].

Dynamical variation of carrier concentration and colossal Seebeck effect in Cu₂S low-temperature phase
D. Byeon, R. Sobota, K. Hirata, S. Singh, S. Choi, M. Adachi, Y. Yamamoto, M. Matsunami, and T. Takeuchi
J. Alloys Compd. 826, 154155 (2020) [6 pages].

Cooling-free infrared sensors with high-performance thermoelectric materials
K. Hirose, M. Adachi, M. Murata, Y. Yamamoto, and T. Takeuchi
Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112880I (31 January 2020).

Hard x-ray photoemission spectroscopy of rhenium substituted higher manganese silicides
M. Matsunami, T. Iizuka, S. Ghodke, A. Yamamoto, H. Miyazaki, and T. Takeuchi
J. Appl. Phys. 127, 053103 (2020) [5 pages].

High-Performance Solid-State Thermal Diode Consisting of Ag₂(S,Se,Te)
K. Hirata, T. Matsunaga, S. Singh, M. Matsunami, and T. Takeuchi
Proceedings of International Conference on Thermoelectrics (ICT 2019)
J. Elec. Mater. 49, 2895-2901 (2020) [7 pages].

Long-term stability of the colossal Seebeck effect in metallic Cu₂Se
D. Byeon, R. Sobota, S. Singh, S. Ghodke, S. Choi, N. Kubo, M. Adachi, Y. Yamamoto, M. Matsunami, and T. Takeuchi
Proceedings of International Conference on Thermoelectrics (ICT 2019)
J. Elec. Mater. 49, 2855-2861 (2020) [7 pages].

Investigation of Thermoelectric Properties of Ag₂S_xSe_1-x (x = 0.0, 0.2 and 0.4)
S. Singh, K. Hirata, D. Byeon, T. Matsunaga, O. Muthusamy, S. Ghodke, M. Adachi, Y. Yamamoto, M. Matsunami, and T. Takeuchi
Proceedings of International Conference on Thermoelectrics (ICT 2019)
J. Elec. Mater. 49, 2846-2854 (2020) [9 pages].

Enhancement of the Thermoelectric Performance of Si-Ge Nanocomposites Containing a Small Amount of Au and Optimization of Boron Doping
O. Muthusamy, S. Ghodke, S. Singh, K. Delime-Codrin, S. Nishino, M. Adachi, Y. Yamamoto, M. Matsunami, S. Harish, M. Shimomura, and T. Takeuchi
Proceedings of International Conference on Thermoelectrics (ICT 2019)
J. Elec. Mater. 49, 2813-2824 (2020) [12 pages].

Thermoelectric Properties of Yb₅Si₃
T. Iizuka, T. Hori, M. Matsunami, and T. Takeuchi
Jpn. J. Appl. Phys. 59, 010902 (2020) [3 pages].

Au and B co-doped p-type Si-Ge nanocomposites possessing ZT = 1.63 synthesized by ball milling and low-temperature sintering
Muthusamy Omprakash, Kévin Delime-Codrin, Swapnil Ghodke, Saurabh Singh, Shunsuke Nishino, Yoshiyuki Yamamoto, Masaharu Matsunami, Harish Santhanakrishnan, Masaru Shimomura, Tsunehiro Takeuchi
Jpn. J. Appl. Phys. 58, 125501 (2019) [9 pages].

バイアス電圧で制御する熱流スイッチング素子の創製
松永卓也, 平田圭佑, Saurabh Singh, 松波雅治, 竹内恒博
日本熱電学会誌 16, 73-76 (2019) [4 pages].

Improved Thermoelectric Properties of Re-Substituted Higher Manganese Silicides by Inducing Phonon Scattering and an Energy-Filtering Effect at Grain Boundary Interfaces
Swapnil Ghodke, Akio Yamamoto, Hsuan-Chun Hu, Shunsuke Nishino, Takuya Matsunaga, Dogyun Byeon, Hiroshi Ikuta, Tsunehiro Takeuchi
ACS Appl. Mater. Interfaces 11, 31169 (2019) [8 pages].

Ag₂Ch (Ch=S, Se, Te) の異常な熱伝導度と それを利用した固体熱整流素子の開発
平田圭佑, Saurabh Singh, 松永卓也, 松波雅治, 竹内恒博
日本熱電学会誌 16, 3-7 (2019) [5 pages].

Fabrication of ultrathin poly-crystalline SiGe-on-insulator layer for thermoelectric applications
C.P. Goyal, M. Omprakash, M. Navaneethan, T. Takeuchi, Y. Shimura, M. Shimomura, S. Ponnusamy, Y. Hayakawa, H. Ikeda
J. Phys. Commun. 3, 075007 (2019).

Effect of Different Processing Routes on the Power Factor of the Filled Skutterudite Sm_y(Fe_xNi_1-x)₄Sb₁₂ (x = 0.50-0.80; y = 0.12-0.53)
Cristina Artini, Giovanna Latronico, Riccardo Carlini, Shrikant Saini, Tsunehiro Takeuchi, Seongho Choi, Angelica Baldini, Umberto Anselmi-Tamburini, Fabrizio Valenza, Palo Mele
ES Mater. Manuf. 5, 29-37 (2019).

Effect of Re Substitution on the Phase Stability of Complex MnSi_γ
S. Ghodke, R. Sobota, D. Berthebaud, P-Y. Pichon, C. Navone, and T. Takeuchi
J. Electron. Mater. 48, 5827 (2019) [8 pages].

Phonon scattering at the interfaces of epitaxially grown Fe₂VAl/W and Fe₂VAl/Mo superlattices
S. Hiroi, S. Nishino, S. Choi, O. Seo, J. Kim, Y. Chen, C. Song, A. Tayal, O. Sakata, and T. Takeuchi
J. Appl. Phys. 125, 225101 (2019) [7 pages].

Phase Diagram of Bi₂Sr₂CaCu₂O_8+δ Constructed on Basis of Electronic Structure Investigations
R. Sobota, N. Kubo, M. Matsunami, and T. Takeuchi
J. Phys. Soc. Jpn. 88, 064711 (2019) [7 pages].

Large figure of merit ZT = 1.88 at 873 K achieved with nanostructured Si_0.55Ge_0.35(P_0.10Fe_0.01)
K. Delime-Codrin, M. Omprakash, S. Ghodke, R. Sobota, M. Adachi, M. Kiyama, T. Matsuura, Y. Yamamoto, M. Matsunami, and T. Takeuchi
Appl. Phys. Express 12, 045507 (2019) [6 pages].

Density Wave Probes Cuprate Quantum Phase Transition
Tatiana A. Webb, Michael C. Boyer, Yi Yin, Debanjan Chowdhury, Yang He, Takeshi Kondo, T. Takeuchi, H. Ikuta, Eric W. Hudson, Jennifer E. Hoffman, and Mohammad H. Hamidian
Phys. Rev. X 9, 021021 (2019) [10 pages].

Discovery of Colossal Seebeck Effect in Metallic Cu₂Se
D. Byeon, R. Sobota, K. Delime-Codrin, S. Choi, K. Hirata, M. Adachi, M. Kiyama, T. Matsuura, Y. Yamamoto, M. Matsunami, and T. Takeuchi
Nat. Commun. 10, 72 (2019) [7 pages].

Synthesis, crystal structure and physical properties of Yb₂Pd₃Ge₅
R. Freccero, S. H. Choi, P. Solokha, S. De Negri, T. Takeuchi, S. Hirai, P. Mele, and A. Saccone
J. Alloys Compounds 783, 601-607 (2019) [7 pages].

Direct observation of pseudo-gap electronic structure in the Heusler-type Fe₂VAl thin film
H. Miyazaki, S. Tateishi, M. Matsunami, K. Soda, S. Yamada, K. Hamaya, and Y. Nishino
J. Electron Spectrosc. Rel. Phenom. 232, 1 (2019) [4 pages].

Optimization of thermoelectric properties achieved in Cu doped β-In₂S₃ bulks
Yue-Xing Chen, Fu Li, Wenting Wang, Zhuanghao Zheng, Jingting Luo, Ping Fan, TsunehiroTakeuchi
J. Alloys Compounds 782, 641-647 (2019) [7 pages].

Effects of Re substitution for Mn on microstructures and properties in Re-substituted higher manganese silicide thermoelectric material
T. Homma, T. Kamata, N. Saito, S. Ghodke, T. Takeuchi
J. Alloys Compounds 776, 8-15 (2019) [8 pages].

Antiferromagnetic order is possible in ternary quasicrystal approximants
A. Ishikawa, T. Fujii, T. Takeuchi, T. Yamada, Y. Matsushita, and R. Tamura
Phys. Rev. B 98, 220403(R) (2018) [4 pages].

Effective Decrease of the Thermal Conductivity Caused by Hf in Fe(V_0.955-xHf_0.045Ti_x)Sb Half-Heusler Phase
K. Delime-Codrin, G. Swapnil, D. Byeon, R. Sobota, M. Matsunami and T. Takeuchi
Mater. Trans. 59, 1637 (2018) [8 pages].

Influence of Au on Ge Crystallization and Its Thermoelectric Properties in a Au-induced Ge Crystallization Technique
S. Shanthi, K. Faizan, S. Nishino, M. Omprakash, T. Takeuchi, Y. Shimura, Y. Hayakawa, C. Muthamizhchelvan, and H. Ikeda
J. Adv. Phys. 14, 5460-5466 (2018) [7 pages].

Discovery of superconductivity in quasicrystal
K. Kamiya, T. Takeuchi, N. Kabeya, N. Wada, T. Ishimasa, A. Ochiai, K. Deguchi, K. Imura and N. K. Sato
Nat. Commun. 9, 154 (2018) [8 pages].

Thermoelectric Properties of Nanograined Si-Ge-Au Thin Films Grown by Molecular Beam Deposition
S. Nishino, S. Ekino, M. Inukai, M. Omprakash, M. Adachi, M. Kiyama, Y. Yamamoto, and T. Takeuchi
Proceedings of International Conference on Thermoelectrics 2017
J. Electron. Mater. 47 (2018), 3267–3272.

Low Thermal Conductivity of Bulk Amorphous Si_1?xGe_x Containing Nano-Sized Crystalline Particles Synthesized by Ball-Milling Process
O. Muthusamy, S. Nishino. S. Ghodke, M. Inukai, R. Sobota, M. Adachi, M. Kiyama, Y. Yamamoto, T. Takeuchi, H. Santhanakrishnan, H. Ikeda, Y. Hayakawa
Proceedings of International Conference on Thermoelectrics 2017
J. Electron. Mater. 47 (2018), 3260–3266.

High-Throughput Screening of Sulfide Thermoelectric Materials Using Electron Transport Calculations with OpenMX and BoltzTraP
M. Miyata, T. Ozaki, T. Takeuchi, S. Nishino, M. Inukai, M. Koyano
Proceedings of International Conference on Thermoelectrics 2017
J. Electron. Mater. 47 (2018), 3254–3259.

Analyzing the Boundary Thermal Resistance of Epitaxially Grown Fe₂VAl/W Layers by Picosecond Time-Domain Thermoreflectance
S. Hiroi, S. Choi, S. Nishino, O. Seo, Y. Chen, O. Sakata, T. Takeuchi
Proceedings of International Conference on Thermoelectrics 2017
J. Electron. Mater. 47 (2018), 3113–3118.

Direct observation of heterogeneous valence state in Yb-based quasicrystalline approximants
M. Matsunami, M. Oura, K. Tamasaku, T. Ishikawa, S. Ideta, K. Tanaka, T. Takeuchi, T. Yamada, A. P. Tsai, K. Imura, K. Deguchi, N. K. Sato, and T. Ishimasa
Phys. Rev. B 96, 241102(R) (2017) [4 pages].

Carrier concentration dependence of thermoelectric properties of Fe(V_1-x,Ti_x)Sb half-Heusler phase
K. Delime-Codrin, T. Yamada, A. Yamamoto, R. Sobota, M. Matsunami, and T. Takeuchi
Jpn. J. Appl. Phys. 56, 111202 (2017) [5 pages].

First Observation of Heavy-Fermion Nature in Ce-based Icosahedral Approximant
K. Imura, K. Nobe, K. Deguchi, M. Matsunami, H. Miyazaki, A. Yasui, E. Ikenaga, and N. K. Sato
J. Phys. Soc. Jpn. 86, 093702 (2017) [4 pages].

Superconducting gap of heavily underdoped copper oxide superconductor (Bi,Pb)₂Sr₂(Ca,Y)Cu₂O_8+δ
H. Sakamoto, T. Kondo, S. Shin, M. Matsunami, H. Ikuta, and T. Takeuchi
Proceedings of the “39th International Conference on Vacuum Ultraviolet and X-ray Physics (VUVX-2016)
J. Electron Spectrosc. Rel. Phenom. 220, 54 (2017) [4 pages].

Enhancement of power factor by energy filtering effect in hierarchical BiSbTe₃ nanostructures for thermoelectric applications
M. Sabarinathana, M. Omprakash, S. Harish, M. Navaneethan, J. Archana, S. Ponnusamy, H. Ikeda, T. Takeuchi, C. Muthamizhchelvan, and Y. Hayakawa
Appl. Surf. Sci. 418, 246-251 (2017).

Doping effects of Mg for In on the thermoelectric properties of β-In₂S₃ bulk samples
Y.-X. Chen, A. Yamamoto, and T. Takeuchi
J. Alloys Compounds 695, 1631-1636 (2017).

Thermoelectric properties of p-type Cr doped MnSiγ prepared by liquid quenching technique
S. Ghodke, A. Yamamoto, M. Omprakash, H. Ikuta, and T. Takeuchi
Mater. Trans. 58, 160-163 (2017).

The Potential of FeVSb Half-Heusler Phase for Practical Thermoelectric Material
A. Yamamoto and T. Takeuchi
J. Electron. Mater. 46, 3200-3206 (2017) [6 pages].

Thickness dependence of thermal conductivity and electron transport properties of Fe₂VAl thin-films prepared by RF sputtering technique
S. Hiroi, M. Mikami, K. Kitahara, and T. Takeuchi
International Journal of Nanotechnology 13, 881 (2016) [10 pages].

Time-resolved HAXPES using a microfocused XFEL beam: From vacuum space-charge effects to intrinsic charge-carrier recombination dynamics
L.-P. Oloff, A. Chainani, M. Matsunami, K. Takahashi, T. Togashi, H. Osawa, K. Hanff, A. Quer, R. Matsushita, R. Shiraishi, M. Nagashima, A. Kimura, K. Matsuishi, M. Yabashi, Y. Tanaka, G. Rossi, T. Ishikawa, K. Rossnagel, and M. Oura
Sci. Rep. 6, 35087 (2016) [10 pages].

Carrier Concentration Dependence of Superconducting Gap of Bi₂(Sr, La)₂CuO_6+δ
H. Sakamoto, K. Ogawa, T. Kondo, S. Shin, M. Matsunami, H. Ikuta, and T. Takeuchi
J. Phys. Soc. Jpn. 85, 104710 (2016) [7 Pages].

Thermoelectric Properties of Fe2VAl-Based Thin-Films Deposited at High Temperature
S. Hiroi, M. Mikami and T. Takeuchi
Mater. Trans. 57, 1628 (2016) [5 pages].

The Potential of Maximal ZT-Value for Thermoelectric Materials of Mn₁₁Si₁₉ HMS Phase by Calculating Electronic Structure
A. Yamamoto, K. Kitahara, H. Miyazaki, M. Inukai, and T. Takeuchi
Proceedings of 11th International Conference on Ceramic Materials and Components for Energy and Environmental Applications
Ceramics for Energy Conversion, Storage, and Distribution Systems: Ceram. Trans. 255, 147 (2016) [10 pages].

Thermoelectric Properties Higher Manganese Silicide Containing Small Amount of MnSi/Si Nano?Particles
Swapnil Ghodke, A. Yamamoto, H. Ikuta, T. Takeuchi
Proceedings of 11th International Conference on Ceramic Materials and Components for Energy and Environmental Applications
Ceramics for Energy Conversion, Storage, and Distribution Systems: Ceram. Trans. 255, 115 (2016) [8 pages].

Development of Thermoelectric Materials Consisting Solely of Environmental Friendly Elements
T. Takeuchi, A. Yamamoto and S. Ghodke
Mater. Trans. 57, 1029 (2016) [6 pages]. (Review article)

Thermoelectric Properties of Al-Mn-Si Based C54 Phase Containing Small Amount of C40 Phase
A. Yamamoto, S. Ghodke, H. Miyazaki, Y. Nishino, M. Matsunami and T. Takeuchi
Mater. Trans. 57, 1055 (2016) [4 pages].

Enhanced thermoelectric properties of W and Fe substituted MnSiγ
S. Ghodke, N. Hiroishi, A. Yamamoto, H. Ikuta, M. Matsunami, and T. Takeuchi
J. Electron. Mater. 45, 5279-5284 (2016) [6 pages].

Slater to Mott Crossover in the Metal to Insulator Transition of Nd₂Ir₂O₇
M. Nakayama, Takeshi Kondo, Z. Tian, J.J. Ishikawa, M. Halim, C. Bareille, W. Malaeb, K. Kuroda, T. Tomita, S. Ideta, K. Tanaka, M. Matsunami, S. Kimura, N. Inami, K. Ono, H. Kumigashira, L. Balents, S. Nakatsuji, and S. Shin
Phys. Rev. Lett. 117, 056403 (2016) [5 pages].

Thermal Conductivity Measurement of Liquid-Quenched Higher Manganese Silicides
S. Nishino, M. Miyata, K. Ohdaira, M. Koyano, and T. Takeuchi
J. Electron. Mater. 45, 1821-1826 (2016) [6 pages].

Thermoelectric properties of super-saturated Re solid solution of higher manganese silicides
A. Yamamoto, S. Ghodke, H. Miyazaki, M. Inukai, Y. Nishino, M. Matsunami, and T. Takeuchi
Jpn. J. Appl. Phys. 55, 020301 (2016) [4 pages].

Thermoelectric properties of β-Indium sulfide with sulphur deficiencies
Y.-X. Chen, K. Kitahara, and T. Takeuchi
J. Appl. Phys. 118, 245103 (2015) [8 pages].

Point nodes persisting far beyond T_c in Bi2212
Takeshi Kondo, W. Malaeb, Y. Ishida, T. Sasagawa, H. Sakamoto, Tsunehiro Takeuchi, T. Tohyama，and S. Shin
Nat. Commun. 6, 7699 (2015) [8 pages].

Pairing, pseudogap and Fermi arcs in cuprates
A. Kaminski, T. Kondo, T. Takeuchi, and G. Gu
Phil. Mag. 95, 453 (2015) [13 pages].

Thermoelectric properties of Al–Mn–Si C40 phase containing small amount of W or Ta
A. Yamamoto, H. Miyazaki, M. Inukai, Y. Nishino, and T. Takeuchi
Jpn. J. Appl. Phys. 54, 071801 (2015) [9 pages].

C40相を微量に含有するAl-Mn-Si基C54相の熱電特性
山本晃生, 宮崎秀俊, 西野洋一, 竹内恒博
日本金属学会誌 特集「熱電材料研究の新展開~新しい物性解析技術と新材料~」 79, 577 (2015) [4 pages].

Thermal Rectification in Bulk Material Through Unusual Behavior of Electron Thermal Conductivity of Al-Cu-Fe Icosahedral Quasicrystal
R. Nakayama and T. Takeuchi
J. Electron. Mater. 44, 356 (2014) [6 pages].

Very large thermal rectification in bulk composites consisting partly of icosahedral quasicrystals
T. Takeuchi
Sci. Technol. Adv. Mater. 15, 064801 (2014) [8 pages].

Fe₂VAl-Based Thermoelectric Thin Films Prepared by a Sputtering Technique
Y. Furuta, K. Kato, T. Miyawaki, H. Asano, and T. Takeuchi
J. Electron. Mater. 43, 2157 (2014) [8 pages].

Evaluation of the Thermoelectric Module Consisting of W-Doped Heusler Fe₂VAl Alloy
M. Mikami, M. Mizoshiri, K. Ozaki, H. Takazawa, A. Yamamoto, Y. Terazawa, and T. Takeuchi
J. Electron. Mater. 43, 1922 (2014) [5 pages].

Fermi Surface and Pseudogap Evolution in a Cuprate Superconductor
Yang He, Yi Yin, M. Zech, Anjan Soumyanarayanan, Michael M. Yee, Tess Williams, M. C. Boyer, Kamalesh Chatterjee, W. D. Wise, I. Zeljkovic, Takeshi Kondo, T. Takeuchi, H. Ikuta, Peter Mistark, Robert S. Markiewicz, Arun Bansil, Subir Sachdev, E. W. Hudson, J. E. Hoffman
Science 344, 608 (2014) [4 pages].

Thermoelectric properties of Al-(Mn,X)-Si C54-phase (X = Ru and Re)
A. Yamamoto, H. Miyazaki, and T. Takeuchi
J. Appl. Phys. 115, 023708 (2014) [10 pages].