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We investigate the effect of electronic correlations onto the thermoelectricity of semi-conductors and insulators. Appealing to model considerations, we study various many-body renormalizations that enter the thermoelectric response. We…

材料科学 · 物理学 2010-08-13 Jan M. Tomczak , K. Haule , T. Miyake , A. Georges , G. Kotliar

We discuss the temperature-dependent thermoelectric transport properties of semiconductor nanostructures comprising a quantum dot coupled to quantum wires: the thermal dependence of the electrical conductance, thermal conductance, and…

介观与纳米尺度物理 · 物理学 2021-02-17 D. F. Aranguren-Quintero , E. Ramos , J. Silva-Valencia , M. S. Figueira , L. N. Oliveira , R. Franco

We theoretically investigate the thermoelectric properties of semiconducting (gapped) materials by varying the degrees of polynomials in their energy dispersion relations, in which either the valence or conduction energy dispersion depends…

Identifying materials and devices which offer efficient thermoelectric effects at low temperature is a major obstacle for the development of thermal management strategies for low-temperature electronic systems. Superconductors cannot offer…

介观与纳米尺度物理 · 物理学 2014-09-04 F. Giazotto , J. W. A. Robinson , J. S. Moodera , F. S. Bergeret

A thermal gradient generates an electric field in any solid hosting mobile electrons. In presence of a finite magnetic field (or Berry curvature) this electric field has a transverse component. These are known as Seebeck and Nernst…

强关联电子 · 物理学 2022-04-12 Kamran Behnia

Thermoelectric materials convert heat into electricity through thermally driven charge transport in solids, or vice versa for cooling. To be competitive with conventional energy-generation technologies, a thermoelectric material must…

The thermoelectric response of high mobility single layer epitaxial graphene on silicon carbide substrates as a function of temperature and magnetic field have been investigated. For the temperature dependence of the thermopower, a strong…

介观与纳米尺度物理 · 物理学 2015-05-27 Xiaosong Wu , Yike Hu , Ming Ruan , Nerasoa K. Madiomanana , Claire Berger , Walt A. de Heer

Thermophoresis is a transport phenomenon induced by a temperature gradient. Very small objects dispersed in a fluid medium and in a temperature gradient present a non homogeneous steady density. Analysing this phenomenon within the…

统计力学 · 物理学 2022-01-25 J. M. Sancho

We investigate nonlinear transport properties of quantum conductors in response to both electrical and thermal driving forces. Within scattering approach, we determine the nonequilibrium screening potential of a generic mesoscopic system…

介观与纳米尺度物理 · 物理学 2013-01-16 David Sanchez , Rosa Lopez

Unlike in conventional semiconductors, both the chemical potential and the band gap in bilayer graphene (BLG) can be tuned via application of external electric field. Among numerous device implications, this property also designates BLG as…

介观与纳米尺度物理 · 物理学 2019-07-16 Dominik Suszalski , Grzegorz Rut , Adam Rycerz

The collective amplitude mode of the order parameter in displacive ferroelectrics, termed the ferron, represents the amplitude fluctuations of long-range ordered polarization. At temperatures well below phase transition temperature $T_c$,…

材料科学 · 物理学 2025-07-30 G. D. Zhao , F. Yang , L. Q. Chen

To increase the performance of thermoelectric materials, the electronic parameters in the figure of merit must be improved. In this paper, we use full, numerical band structures and solve the Boltzmann equation in the relaxation time…

材料科学 · 物理学 2018-12-17 Evan Witkoske , Xufeng Wang , Jesse Maassen , Mark Lundstrom

Fano and hybrid resonances of bilayer graphene could be attractive for thermoelectric devices. The special profile presented by such resonances could significantly enhance the Seebeck coefficient and the power factor. In this work, we study…

介观与纳米尺度物理 · 物理学 2020-08-12 J. A. Briones-Torres , R. Pérez-Álvarez , S. Molina-Valdovinos , I. Rodríguez-Vargas

Thermoelectric power (TEP) is measured in bilayer graphene for various temperatures and charge-carrier densities. At low temperatures, measured TEP well follows the semiclassical Mott formula with a hyperbolic dispersion relation. TEP for a…

介观与纳米尺度物理 · 物理学 2010-12-14 Seung-Geol Nam , Dong-Keun Ki , Hu-Jong Lee

The switching of the magnetization configurations of giant magnetoresistance multilayer stacks not only changes the electric and thermal conductivities, but also the thermopower. We study the magnetotransport and the magneto-thermoelectric…

We present a microscopic theory for quantum thermoelectric and heat transport in the Schwarzian regime of the Sachdev-Ye-Kitaev (SYK) model. As a charged fermion realization of the SYK model in nanostructures we assume a setup based on a…

强关联电子 · 物理学 2021-05-12 Andrei I. Pavlov , Mikhail N. Kiselev

The thermal accommodation coefficient $\alpha$ has been assumed, although lacking any experimental proof, to be near unity for most gases so far, which denotes no influence. However, it plays a contributing role in the field of the…

材料科学 · 物理学 2021-12-08 D. Bayer-Buhr , M. Vimal , A. Prakash , U. Gross , T. Fieback

The thermoelectric and transport properties of a Fe3O4/SiO2/p-Si(100) heterostructure have been investigated between 100 and 300 K. Both Hall and Seebeck coefficients change sign from negative to positive with increasing temperature while…

材料科学 · 物理学 2015-06-19 Z. Viskadourakis , M. L. Paramês , O. Conde , M. Zervos , J. Giapintzakis

We investigate the thermoelectric properties of a one-dimensional quantum system in the presence of an external driving. We employ Floquet scattering theory to calculate linear-response stationary thermoelectric figures of merit in a…

介观与纳米尺度物理 · 物理学 2026-05-12 C. X. Zhang , Alessandro Braggio , Alessandro Romito , Fabio Taddei

A new formalism to describe steady-state electronic and thermal transport in the framework of density functional theory is presented. A one-to-one correspondence is proven between the three basic variables of the theory, i.e., the density…

介观与纳米尺度物理 · 物理学 2022-04-26 Nahual Sobrino , Florian Eich , Gianluca Stefanucci , Roberto D'Agosta , Stefan Kurth