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Using wave function matching approach and employing the Landauer-Buttiker formula a ferromagnetic graphene junction with a temperature gradient across the system, is studied. We calculate the thermally induced charge and spin current as…

介观与纳米尺度物理 · 物理学 2016-08-24 Javad Vahedi , Fattaneh Barimani

The electromagnetic emissivity from QCD media away from equilibrium is studied in the framework of closed time path thermal field theory. For the dilepton rate a nonequilibrium mesonic medium is considered applying finite temperature…

高能物理 - 唯象学 · 物理学 2011-04-15 R. Baier , M. Dirks , K. Redlich

Linear temperature dependence of transport coefficients in metals is often ascribed to non-Fermi-liquid physics. Here we demonstrate the $T$-linear behavior of nonlocal conductivity in a clean 2D electron fluid, where carrier collisions…

介观与纳米尺度物理 · 物理学 2025-02-11 Serhii Kryhin , Qiantan Hong , Leonid Levitov

Heat has always been a killing matter for traditional semiconductor machines. The underlining physical reason is that the intrinsic carrier density of a device made from a traditional semiconductor material increases very fast with a rising…

材料科学 · 物理学 2016-04-21 Yan Yin , Zengguang Cheng , Li Wang , Kuijuan Jin , Wenzhong Wang

The electrical conductivity of graphene with a nonzero mass-gap parameter is investigated starting from the first principles of quantum electrodynamics in (2+1)-dimensional space-time at any temperature. The formalism of the polarization…

介观与纳米尺度物理 · 物理学 2016-11-07 G. L. Klimchitskaya , V. M. Mostepanenko

We adopt the Dirac model for quasiparticles in graphene and calculate the finite temperature Casimir interaction between a suspended graphene layer and a parallel conducting surface. We find that at high temperature the Casimir interaction…

高能物理 - 理论 · 物理学 2013-05-29 Ignat V. Fialkovsky , Valery N. Marachevsky , Dmitri V. Vassilevich

In several unconventional superconductors, the highest superconducting transition temperature $T_{c}$ is found in a region of the phase diagram where the antiferromagnetic transition temperature extrapolates to zero, signaling a putative…

超导电性 · 物理学 2017-05-31 Xiaoyu Wang , Yoni Schattner , Erez Berg , Rafael M. Fernandes

We investigate the origin of the depolarization rates in ultrathin adsorbate-stabilized ferroelectric wires. By applying density functional theory calculations and analytic modeling, we demonstrate that the depolarization results from the…

材料科学 · 物理学 2015-02-16 Y. Qi , J. M. P. Martirez , Wissam A. Saidi , J. J. Urban , W. S. Yun , J. E. Spanier , A. M. Rappe

Starting from H. Fr\"ohlich's second-quantized Hamiltonian for a $d$-dimensional electron gas in interaction with lattice phonons describing the quantum vibrations of a metal, we present a rigorous mathematical derivation of the…

超导电性 · 物理学 2019-02-07 J. Magnen , J. Unterberger

On the basis of the linear response transport theory, the general expressions for the thermoelectric transport coefficients, such as thermoelectric power (S), Nernst coefficient (\nu), and thermal conductivity (\kappa), are derived by using…

强关联电子 · 物理学 2009-11-07 Hiroshi Kontani

The microscopic origins of Fourier's venerable law of thermal transport in quantum electron systems has remained somewhat of a mystery, given that previous derivations were forced to invoke intrinsic scattering rates far exceeding those…

介观与纳米尺度物理 · 物理学 2025-10-09 Sosuke Inui , Charles A. Stafford , Justin P. Bergfield

Using single-crystal transistors, we have performed a systematic experimental study of electronic transport through oxidized copper/rubrene interfaces as a function of temperature and bias. We find that the measurements can be reproduced…

材料科学 · 物理学 2009-11-13 A. S. Molinari , I. Gutierrez Lezama , P. Parisse , T. Takenobu , Y. Iwasa , A. F. Morpurgo

In order to develop a method to extract the parameters of the two inherent Schottky contacts from a single current-voltage (I-V) characteristic curve, the I-V characteristics of metal-semiconductor-metal (MSM) diodes with asymmetric…

材料科学 · 物理学 2014-11-17 Ryo Nouchi

A microscopic many-body transport approach for electronic properties of spatially inhomogeneous systems is developed at the fully quantum-mechanical level by means of plane wavelets second quantization representation. It is obtained that…

材料科学 · 物理学 2012-04-03 A. A. Klyukanov , P. A. Gashin , R. Scurtu

Persistent currents circulate continuously without requiring external power sources. Here, we extend their theory to include dissipation within the framework of non-Hermitian quantum Hamiltonians. Using Green's function formalism, we…

量子物理 · 物理学 2024-08-27 Pei-Xin Shen , Zhide Lu , Jose L. Lado , Mircea Trif

Considering screeening of electron scattering interactions in terms of the finite-temperature STLS theory and solving the linearized Boltzmann equation (with no appeal to a relaxation time approximation), we present a theoretical analysis…

材料科学 · 物理学 2011-06-08 S. Y. Liu , X. L. Lei , Norman J. M. Horing

A quasi-two-dimensional system of hard spheres strongly confined between two parallel plates is considered. The attention is focussed on the macroscopic self-diffusion process observed when the system is looked from above or from below. The…

统计力学 · 物理学 2020-01-09 J. Javier Brey , M. I. García de Soria , P. Maynar

We analyze the charge and thermal transport at a junction of interacting quantum wires close to equilibrium. Within the framework of Tomonaga-Luttinger liquids, we compute the thermal conductance for a wide class of boundary conditions and…

介观与纳米尺度物理 · 物理学 2022-01-24 D. Giuliano , A. Nava , R. Egger , P. Sodano , F. Buccheri

We calculate the temperature dependent conductivity of graphene in the presence of randomly distributed Coulomb impurity charges arising from the temperature dependent screening of the Coulomb disorder without any phonons. The purely…

介观与纳米尺度物理 · 物理学 2009-05-22 E. H. Hwang , S. Das Sarma

The question of thermodynamic consistence and $\Phi$-derivability of the asymptotic limit of high spatial dimensions for quantum itinerant models is addressed. It is shown that although the irreducible $n$-particle Green functions are…

强关联电子 · 物理学 2016-08-31 V. Janis