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Previous theoretical studies on superconductivity were focused on the static states and adiabatic processes. Quantum mechanics simulations of time-dependent processes in superconductors were rarely performed previously. Here we use…

超导电性 · 物理学 2024-12-13 Zhigang Song , Xin Li

We discuss a semiclassical approach to solve the quantum impurity model within non-equilibrium dynamical mean-field theory for electron-lattice models. The effect of electronic fluctuations on the phonon is kept beyond Ehrenfest dynamics,…

强关联电子 · 物理学 2023-07-11 Antonio Picano , Francesco Grandi , Philipp Werner , Martin Eckstein

The effect of edge-type dislocation wall strain field on the Hall mobility in n-type epitaxial GaN was theoretically investigated through deformation potential within the relaxation time approach. It was found that this channel of…

材料科学 · 物理学 2015-05-13 S. E. Krasavin

Electron spin decoherence caused by elastic spin-phonon processes is investigated comprehensively in a zero-dimensional environment. Specifically, a theoretical treatment is developed for the processes associated with the fluctuations in…

其他凝聚态物理 · 物理学 2009-11-11 Y. G. Semenov , K. W. Kim

Electron-phonon scatterings in solid-state systems are pivotal processes in determining many key physical quantities such as charge carrier mobilities and thermal conductivities. Here, we report on the direct probing of phonon mode specific…

介观与纳米尺度物理 · 物理学 2022-03-24 Duk Hyun Lee , Sang-Jun Choi , Hakseong Kim , Yong-Sung Kim , Suyong Jung

We consider the physics of transport through quantum dots in the presence of two tunneling paths. The first path sees electrons hopping on and off the dot while the second path is modeled through a potential scattering-like term. To study…

介观与纳米尺度物理 · 物理学 2007-05-23 Robert M. Konik

A quantum theory of the spin-dependent scattering of semiconductor electrons by a Schottky barrier at an interface with a ferromagnet is presented. The reflection of unpolarized non-equilibrium carriers produces spontaneous…

介观与纳米尺度物理 · 物理学 2007-05-23 J. P. McGuire , C. Ciuti , L. J. Sham

Electron-phonon interaction is of central importance for the electrical and heat transport properties of metals, and is directly responsible for charge-density-waves or (conventional) superconducting instabilities. The direct observation of…

超导电性 · 物理学 2022-02-02 S. M. Souliou , A. Bosak , G. Garbarino , M. Le Tacon

The coherent interaction between free electrons and optical near-fields enables the active modulation of electron wave packets, a mechanism central to photon-induced near-field electron microscopy (PINEM). While existing theories…

量子物理 · 物理学 2026-05-12 Mads Brøndum Carlsen , Lars Bojer Madsen

We have studied experimentally and theoretically the influence of electron-electron collisions on the propagation of electron beams in a two-dimensional electron gas for excess injection energies ranging from zero up to the Fermi energy. We…

介观与纳米尺度物理 · 物理学 2009-10-31 H. Predel , H. Buhmann , L. W. Molenkamp , R. N. Gurzhi , A. N. Kalinenko , A. I. Kopeliovich , A. V. Yanovsky

It is shown theoretically that the strong coupling of electrons to a high-frequency electromagnetic field results in the nulling of electron backscattering within the Born approximation. The conditions of the effect depend only on field…

介观与纳米尺度物理 · 物理学 2015-09-02 O. V. Kibis

Electron-beam propagation experiments have been used to determine the energy and angle dependence of electron-electron (ee) scattering a two-dimensional electron gas (2DEG) in a very direct manner by a new spectroscopy method. The…

介观与纳米尺度物理 · 物理学 2009-10-31 A. V. Yanovsky , H. Predel , H. Buhmann , R. N. Gurzhi , A. N. Kalinenko , A. I. Kopeliovich , L. W. Molenkamp

We have analyzed low-temperature behavior of two-dimensional electron gas in polar heterostructures subjected to a high electric field. When the optical phonon emission is the fastest relaxation process, we have found existence of…

介观与纳米尺度物理 · 物理学 2012-10-29 V. V. Korotyeyev , V. A. Kochelap , L. Varani

Modulating macroscopic parameters of materials in time offers innovative avenues for manipulating electromagnetic waves. Due to such enticing prospects, the general research subject of time-varying systems is expanding today in different…

光学 · 物理学 2024-12-06 M. S. Mirmoosa , T. Setälä , A. Norrman

The electron spin effects on the surface of a nanotube have been considered through the spin-orbit interaction (SOI), arising from the electron confinement on the surface of the nanotube. This is of the same nature as the Rashba-Bychkov SOI…

介观与纳米尺度物理 · 物理学 2015-05-20 Yonatan Abranyos , Godfrey Gumbs , Paula Fekete

Diffusion of electrons in a two-dimensional system with time-dependent random potentials is investigated numerically. In the absence of spin-orbit scattering, the conductivity shows universal weak localization correction. In the presence of…

介观与纳米尺度物理 · 物理学 2009-10-30 Takeshi Nakanishi , Tomi Ohtsuki

The electron scattering with longitudinal polar optical phonons in a quantizing magnetic field tilted to the plane of quantum well layers is studied. The scattering rate's behavior at variation of the magnetic field magnitude and…

介观与纳米尺度物理 · 物理学 2025-06-23 M. P. Telenkov , Yu. A. Mityagin , D. S. Korchagin

We evaluate the joint distributions of electron waiting times in coherent conductors described by scattering theory. Successive electron waiting times in a single-channel conductor are found to be correlated due to the fermionic statistics…

介观与纳米尺度物理 · 物理学 2015-05-20 David Dasenbrook , Patrick P. Hofer , Christian Flindt

We introduce a model of a nonlinear double-barrier structure, to describe in a simple way the effects of electron-electron scattering while remaining analytically tractable. The model is based on a generalized effective-mass equation where…

凝聚态物理 · 物理学 2009-10-28 Enrique Diez , Angel Sanchez , Francisco Dominguez-Adame

We have surveyed the in-plane transport properties of the graphene twist bilayer using (i) a low-energy effective Hamiltonian for the underlying electronic structure, (ii) an isotropic elastic phonon model, and (iii) the linear Boltzmann…

介观与纳米尺度物理 · 物理学 2016-12-21 N. Ray , M. Fleischmann , D. Weckbecker , S. Sharma , O. Pankratov , S. Shallcross