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We study, both theoretically and experimentally, the features on the current-voltage characteristic of a highly transparent Josephson junction caused by transition of the superconducting leads to the normal state. These features appear due…

Unconventional superconductivity frequently emerges as the transition temperature of a magnetic phase, typically antiferromagnetic, is suppressed continuously toward zero temperature. Here, we report contrary behavior in pressurized…

Thermoelectric effects have been applied to power generators and temperature sensors that convert waste heat into electricity. The effects, however, have been limited to electrons to occur, and inevitably disappear at low temperatures due…

Controlling the direction and magnitude of both heat and electronic currents using rectifiers has significant implications for the advancement of molecular circuit design. In order to facilitate the implementation of new transport phenomena…

介观与纳米尺度物理 · 物理学 2019-08-02 Galen T. Craven , Dahai He , Abraham Nitzan

Tunable Kondo lattice and heavy fermion physics have been recently reported in moir\'e materials, but most of the studies have focused on the electrical and magnetic properties. Quantitative thermoelectric measurements, which can reveal…

强关联电子 · 物理学 2025-11-03 Yichi Zhang , Wenjin Zhao , Zhongdong Han , Kenji Watanabe , Takashi Taniguchi , Jie Shan , Kin Fai Mak

We calculate the temperature dependence of the transport properties of heavy-fermion systems such as resistivity, optical conductivity, thermoelectric power, the electronic part of the thermal conductivity, and the "figure of merit." The…

强关联电子 · 物理学 2009-11-11 Claas Grenzebach , Frithjof B. Anders , Gerd Czycholl , Thomas Pruschke

Thermoelectric effects have attracted wide attention in recent years from physicists and engineers. In this work, we explore the selfsimilar patterns in the thermoelectric effects of monolayer graphene based structures, by using the quantum…

Separating electron and phonon thermal conductivity components is imperative for understanding the principle thermal transport mechanisms in metals and highly desirable in many applications. In this work, we predict the mode-dependent…

材料科学 · 物理学 2019-10-23 Zhen Tong , Shouhang Li , Xiulin Ruan , Hua Bao

We study the electric and thermoelectric transport properties of correlated quantum dots coupled to two ferromagnetic leads and one superconducting electrode. Transport through such hybrid devices depends on the interplay of…

介观与纳米尺度物理 · 物理学 2015-06-19 Krzysztof P. Wojcik , Ireneusz Weymann

We demonstrate theoretically that the thermal Hall effect of magnons in collinear antiferromagnetic insulators is an indicator of magnetic and topological phase transitions in the magnon spectrum. The transversal heat current of magnons…

强关联电子 · 物理学 2022-03-23 Robin R. Neumann , Alexander Mook , Jürgen Henk , Ingrid Mertig

We theoretically investigate the Seebeck and Peltier effect across an interacting quantum dot(QD) coupled between a normal metal and a Bardeen-Cooper-Schrieffer superconductor within the Coulomb blockade regime. Our results demonstrate that…

介观与纳米尺度物理 · 物理学 2023-09-19 Sachin Verma , Ajay

We study the interacting transport properties of twisted bilayer graphene (TBG) using the topological heavy-fermion (THF) model. In the THF model, TBG comprises localized, correlated $f$-electrons and itinerant, dispersive $c$-electrons. We…

Samples of heavy fermion compound CeCu6 were prepared by hot-press technique. Temperature-dependent (5-300 K) thermoelectric transport properties of the samples were measured. The dimensionless figure-of-merit (ZT) was optimized by varying…

材料科学 · 物理学 2013-12-16 Mani Pokharel , Tulashi Dahal , Zhifeng Ren , Cyril Opeil

The effect of electron-phonon scattering processes over the thermoelectric properties of extrinsic graphene was studied. Electrical and thermal resistivity, as well as the thermopower, were calculated within the Bloch theory approximations.…

介观与纳米尺度物理 · 物理学 2012-08-02 Enrique Muñoz

The heat transport in heavy-doped n-GaAs has been investigated at temperatures T=300 K and 77 K using the irradiation of the metal-semiconductor contact by modulated CO_{2}-laser radiation. It is shown this approach giving an opportunity to…

材料科学 · 物理学 2007-05-23 A. Ya. Shul'man , N. A. Mordovets , I. N. Kotel'nikov

Current-voltage curves of small area hysteretic intrinsic Josephson junctions, for which the Josephson energy $E_J=\hbar J_c/2e$ is of order of thermal energy $kT$, are investigated. A non-monotonic temperature dependence of the switching…

超导电性 · 物理学 2013-08-13 A. Franz , Y. Koval , D. Vasyukov , P. Muller , H. Schneidewind , D. A. Ryndyk , J. Keller , C. Helm

We present a study on inelastic thermoelectric devices, wherein charge currents and electronic and phononic heat currents are intricately interconnected. The employment of double quantum dots in conjunction with a phonon bath positions them…

介观与纳米尺度物理 · 物理学 2024-08-06 Bei Cao , Chongze Han , Xiang Hao , Chen Wang , Jincheng Lu

Mechanocaloric materials experience a change in temperature when a mechanical stress is adiabatically applied on them. Thus far, only ferroelectrics and superelastic metallic alloys have been considered as potential mechanocaloric compounds…

材料科学 · 物理学 2016-05-20 Claudio Cazorla , Daniel Errandonea

We investigate the thermoelectric propeties of the electron-doped FeAs$_2$ both experimentally and theoretically. Electrons are doped by partially substituting Se for As, which leads to a metallic behavior in the resistivity. A Seebeck…

材料科学 · 物理学 2013-09-06 Hidetomo Usui , Kazuhiko Kuroki , Seiya Nakano , Kazutaka Kudo , Minoru Nohara

Substitution of Sb in FeSb$_2$ by less than 0.5% of Te induces a transition from a correlated semiconductor to an unconventional metal with large effective charge carrier mass $m^*$. Spanning the entire range of the semiconductor-metal…

材料科学 · 物理学 2016-08-14 P. Sun , M. Søndergaard , Y. Sun , S. Johnsen , B. B. Iversen , F. Steglich