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Here, we investigate the thermoelectric properties of the marcasite-type compounds MSb$_2$ (M = Ta, Nb) in the temperature range of 310-730 K. These compounds were synthesized by a solid-state reaction followed by the spark plasma sintering…

材料科学 · 物理学 2024-03-20 Shamim Sk , Naoki Sato , Takao Mori

Here, we have studied the temperature dependent Seebeck coefficient (S) of the NaCo$_2$O$_4$ (NCO) by using experimental and computational methods. The range of experimentally obtained S is $\sim$55 to 103 $\mu$V/K in the temperature range…

材料科学 · 物理学 2025-05-06 Rahul Raj , Sudhir K. Pandey

Pyrite FeS$_2$ has been investigated for a wide range of applications, including thermoelectrics due to previous observation of large thermopower at room-temperature. However, the values of thermopower reported in the literature is…

材料科学 · 物理学 2025-10-17 Anustup Mukherjee , Alaska Subedi

Within the framework of the kinetic energy driven superconducting mechanism, the doping dependence of the electromagnetic response in the electron-doped cuprate superconductors is studied. It is shown that although there is an electron-hole…

超导电性 · 物理学 2013-01-29 Zheyu Huang , Huaisong Zhao , Shiping Feng

Organic semiconductors show complex phenomena due to their high energetic disorder. A striking example is the possibility of an increased effective temperature T_eff of the charge carrier distribution relative to the lattice temperature,…

无序系统与神经网络 · 物理学 2025-08-08 Anton Kompatscher , Martijn Kemerink

Topological Insulators are the best thermoelectric materials involving a sophisticated physics beyond their solid state and electronic structure. We show that exists a topological contribution to the thermoelectric effect that arise between…

介观与纳米尺度物理 · 物理学 2019-04-24 Daniel Baldomir , Daniel Faílde

At the ultra-thin limit below 20 nm, a film's electrical conductivity, thermal conductivity, or thermoelectricity depends heavily on its thickness. In most studies, each sample is fabricated one at a time, potentially leading to…

介观与纳米尺度物理 · 物理学 2023-06-22 Kien Trung Nguyen , Giang Bui-Thanh , Hong Thi Pham , Thuat Nguyen-Tran , Chi Hieu Hoang , Hung Q. Nguyen

We investigate the thermoelectric properties of PbTe doped with a small concentration $x$ of Tl impurities acting as acceptors and described by Anderson impurities with negative on-site (effective) interaction. The resulting charge Kondo…

强关联电子 · 物理学 2013-04-11 T. A. Costi , V. Zlatić

We measure gate-tuned thermoelectric power of mechanically exfoliated Bi2Se3 thin films in the topological insulator regime. The sign of the thermoelectric power changes across the charge neutrality point as the majority carrier type…

介观与纳米尺度物理 · 物理学 2015-03-12 Dohun Kim , Paul Syers , Nicholas P. Butch , Johnpierre Paglione , Michael S. Fuhrer

In a recent paper (J.H. Schon, Ch. Kloc, R.C. Haddon and B. Batlogg, Nature 408 (2000) 549) a large increase in the superconducting critical temperature was observed in C60 doped with holes by application of a high electric field. We…

超导电性 · 物理学 2009-11-07 G. A. Ummarino , R. S. Gonnelli

In the hole-doped cuprate superconductors, the superconducting transition temperature $T_c$ exhibits a dome-like feature against the doping rate. By contrast, recent experiments reveal that $T_c$ in the electron-doped systems monotonically…

超导电性 · 物理学 2015-11-02 Daisuke Ogura , Kazuhiko Kuroki

N-type Bi100-xSbx alloys have the highest thermoelectric figure of merit (zT) of all materials below 200K; here we investigate how filling multiple valence band pockets at T and H-points of the Brillouin zone produces high zT in p-type…

材料科学 · 物理学 2013-08-13 Hyungyu Jin , Christopher M. Jaworski , Joseph P. Heremans

We report a thermal transport study of IrSbSe, which crystallizes in a noncentrosymmetric cubic structure with the $P2_13$ space group and shows a narrow-gap semiconducting behavior. The large discrepancy between the activation energy for…

强关联电子 · 物理学 2022-11-08 Yu Liu , Milinda Abeykoon , Niraj Aryal , David Graf , Zhixiang Hu , Weiguo Yin , C. Petrovic

Heusler type compounds have long been recognized as potential thermoelectric (TE) materials. Here, the experimentally observed TE properties of Fe$_{2}$VAl are understood through electronic structure calculations in the temperature range of…

材料科学 · 物理学 2022-04-20 Shamim Sk , P. Devi , Sanjay Singh , Sudhir K. Pandey

We examine the effects of the low-level substitution of S atoms by C and Si atoms on the superconductivity of H$_3$S with the $Im\bar{3}m$ structure at megabar pressure. The hole doping can fine-tune the Fermi energy to reach the electronic…

超导电性 · 物理学 2020-12-17 Yanfeng Ge , Fan Zhang , Ranga P. Dias , Russell J. Hemley , Yugui Yao

The thermoelectric figure of merit of the Heusler alloy TiFe$_{1.5}$Sb was investigated by first-principles calculations of lattice thermal conductivity. The electronic thermal conductivity, electrical conductivity, and Seebeck coefficient…

材料科学 · 物理学 2025-05-27 Rifky Syariati , Athorn Vora-ud , Fumiyuki Ishii , Tosawat Seetawan

We present a study of the thermoelectric (Seebeck and Nernst) response in heavily overdoped, non-superconducting La$_{1.67}$Sr$_{0.33}$CuO$_4$. In spite of the electron-like curvature of the Fermi surface, the Seebeck coefficient is…

超导电性 · 物理学 2021-04-12 Hao Jin , Alessandro Narduzzo , Minoru Nohara , Hidenori Takagi , Nigel Hussey , Kamran Behnia

We theoretically explore the superconducting critical temperature of hole doped blue phosphorene. Implementing the density functional theory calculations, we show that for the hole doped blue phosphorene, the isotropic superconducting state…

超导电性 · 物理学 2017-10-17 Davoud Nasr Esfahani , Reza Asgari

Half Heusler (HH) alloys with 18 valence electron count have attracted significant interest in the area of research related to thermoelectrics. Understanding the novel transport properties exhibited by these systems with semiconducting…

材料科学 · 物理学 2022-02-15 Kavita Yadav , Saurabh Singh , Tsunehiro Takeuchi , K. Mukherjee

Resistivity, Hall effect, Seebeck coefficient, thermal conductivity, heat capacity, and magnetic susceptibility data are reported for CrSb2 single crystals. In spite of some unusual features in electrical transport and Hall measurements…