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The filled skutterudite superconductor PrPt4Ge12 was studied in muon-spin rotation (muSR), specific heat, and electrical resistivity experiments. The continuous increase of the superfluid density with decreasing temperature and the…

Superconductivity · Physics 2015-05-13 A. Maisuradze , M. Nicklas , R. Gumeniuk , C. Baines , W. Schnelle , H. Rosner , A. Leithe-Jasper , Yu. Grin , R. Khasanov

We carried out a comprehensive study of the electronic, magnetic, and thermodynamic properties of Ni-doped ZrTe$_2$. High quality Ni$_{0.04}$ZrTe$_{1.89}$ single crystals show a possible coexistence of charge density waves (CDW,…

Rock-salt structured chalcogenides, such as PbTe, PbSe, and SnTe, are the top candidates for mid-temperature thermoelectric applications, and their p-type thermoelectric efficiencies can be enhanced via aligning the valence bands. Here, we…

Materials Science · Physics 2016-10-19 Min Hong , Zhi-Gang Chen , Yanzhong Pei , Lei Yang , Jin Zou

Unlike in many other semiconductors, the band gap of PbTe increases considerably with temperature. We compute the thermoelectric transport properties of n-type PbTe from first principles including the temperature variation of the electronic…

Materials Science · Physics 2019-12-19 Jiang Cao , José D. Querales-Flores , Stephen Fahy , Ivana Savić

We report the thermoelectric (TE) properties of Na$_{0.74}$Co$_{0.95}$Nb$_{0.05}$O$_{2}$ in the temperature range $300-1200$ K, as a potential candidate for p-type thermoelectric material. The experimental values of Seebeck coefficient (S)…

Strongly Correlated Electrons · Physics 2019-11-18 Arzena Khatun , Shamim Sk , Jayashree Pati , R. S. Dhaka , Sudhir K. Pandey

Recently SnSe compound was reported to have a peak thermoelectric figure-5 of-merit (ZT) of 2.62 at 923 K, but the ZT values at temperatures below 750 K are relatively low. In this work, the electronic structures of SnSe are calculated…

Materials Science · Physics 2015-04-09 Aijun Hong , Lin Li , Haixia Zhu , Zhibo Yan , Junming Liu , Zhifeng Ren

Results of structural neutron diffraction study, magnetization and ESR measure-ments are presented for insulating Nd0.75Ba0.25MnO3, Tc = 129 K. The crystal structure is refined in the range 4.2-300 K. The compound is found to exhibit the…

Strongly Correlated Electrons · Physics 2009-11-11 V. A. Ryzhov , A. V. Lazuta , O. P. Smirnov , I. A. Kiselev , Yu. P. Chernenkov , S. A. Borisov , I. O. Troaynchuk , D. D. Khalyavin

One-dimensional tellurides Ta4SiTe4 and Nb4SiTe4 were found to show high thermoelectric performance below room temperature. This study reported the synthesis and thermoelectric properties of whisker crystals of Ta4SiTe4-Nb4SiTe4 solid…

Materials Science · Physics 2020-12-30 Yuma Yoshikawa , Taichi Wada , Yoshihiko Okamoto , Yasuhiro Abe , Koshi Takenaka

Superconductivity in thin films and powders, and in single crystals of Pr-123 has been found by Blackstead et al. and Zou et al., respectively. Nevertheless, up to now it has never been reported in sintered-policrystalline samples. We have…

Superconductivity · Physics 2007-05-23 F. M. Araujo-Moreira , P. N. Lisboa Filho , S. M. Zanetti , E. R. Leite , W. A. Ortiz

Efficiency of thermoelectric materials is characterized by the figure of merit Z. Z has been believed to be a peculiar material constant. However, the accurate measurements in the present work reveal that Z has large size dependence and a…

Condensed Matter · Physics 2009-11-10 H. Iwasaki , M. Koyano , Y. Yamamura , H. Hori

The structural misfit compound (PbSe)1.16(TiSe2)2 is reported. It is a superconductor with a Tc of 2.3 K. (PbSe)1.16(TiSe2)2 derives from a parent compound, TiSe2, which shows a charge density wave transition and no superconductivity. The…

Superconductivity · Physics 2015-05-19 N. Giang , Q. Xu , Y. S. Hor , A. J. Williams , S. E. Dutton , H. W. Zandbergen , R. J. Cava

High-quality single crystals of LuB12 are grown using the induction zone melting method. The X-ray data are collected at temperatures 293, 135, 95, 50 K. The crystal structure of LuB12 can be refined with record low R-factor in the cubic…

The thermoelectric properties of cubic zincblend silicon carbide nanowires (SiCNWs) with nitrogen impurities and vacancies along [111] direction are theoretically studied by means of atomistic simulations. It is found that the…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 Zhuo Xu , Qing-Rong Zheng , Gang Su

We report about detailed dimensionless figure of merit ($ZT$) calculated by using Fermi integral method (compared with Bi$_2$Te$_3$, CoSb$_3$, and SrTiO$_3$) for thermoelectric (TE) materials' design and its module application.…

Materials Science · Physics 2020-03-05 Hirofumi Kakemoto

In this study, we examined the thermoelectric properties of the layered bismuth-chalcogenide-based (BiCh2-based) compound LaOBiSSe, which is expected to be a new candidate material for thermoelectric applications. Densified samples were…

Materials Science · Physics 2015-10-23 Atsuhiro Nishida , Osuke Miura , Chul-Ho Lee , Yoshikazu Mizuguchi

Topological insulators are a novel class of quantum materials in which time-reversal symmetry, relativistic (spin-orbit) effects and an inverted band structure result in electronic metallic states on the surfaces of bulk crystals. These…

We study the thermoelectric properties of three-dimensional topological Anderson insulators with line dislocations. We show that at high densities of dislocations the thermoelectric figure of merit ZT can be dominated by one-dimensional…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Oleg A. Tretiakov , Ar. Abanov , Shuichi Murakami , Jairo Sinova

The performance and scalability of cryogenic microwave systems, particularly for quantum processors, are fundamentally limited by the thermal stability and loss of their constituent dielectric materials. While mixed titanate ceramics like…

Optics · Physics 2025-09-09 Ingrid Torres , Alex Krasnok

We investigate transport through ionic liquid gated field effect transistors (FETs) based on exfoliated crystals of semiconducting WS$_2$. Upon electron accumulation, at surface densities close to -or just larger than- 10$^{14}$ cm$^{-2}$,…

Mesoscale and Nanoscale Physics · Physics 2015-01-27 Sanghyun Jo , Davide Costanzo , Helmuth Berger , Alberto F. Morpurgo

We report detailed investigations of the properties of a superconductor obtained by substituting In at the Sn site in the topological crystalline insulator (TCI), SnTe. Transport, magnetization and heat capacity measurements have been…

Superconductivity · Physics 2013-04-24 G. Balakrishnan , L. Bawden , S. Cavendish , M. R. Lees
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