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The matrix elements of the deformation potential of C$_{70}$ are calculated by means of a simple, yet accurate solution of the electron-phonon coupling problem in fullerenes, based on a parametrization of the ground state electronic density…

凝聚态物理 · 物理学 2009-10-31 D. Provasi , N. Breda , R. A. Broglia , G. Colo` , H. E. Roman , G. Onida

We estimate the effect of the superconducting gap anisotropy in the dispersive gap mode of phonons, which is observed by the neutron scattering on borocarbide superconductors. We numerically analyze the phonon spectrum considering the…

超导电性 · 物理学 2007-08-01 Masanori Ichioka , Kazushige Machida

The phonon-assisted sticking rate of slow moving atoms impinging on an elastic membrane at nonzero temperature is studied analytically using a model with linear atom-phonon interactions, valid in the weak coupling regime. A perturbative…

介观与纳米尺度物理 · 物理学 2017-12-06 Dennis P. Clougherty

We investigate the influences of the electron-phonon interaction on the transport properties of one quantum-dot system with a side-coupled Majorana zero mode (MZM). Our calculation results show that at the zero-temperature limit, the…

介观与纳米尺度物理 · 物理学 2020-03-18 Xiao-Qi Wang , B. H. Wu , Shu-Feng Zhang , Qi Wang , Wei-Jiang Gong

We analyze theoretically the effects of electron-phonon interaction in the dynamics of an electron that can be trapped to a localized state and detrapped to an extended band state of a small quantum dot (QD) using a simple model system. In…

介观与纳米尺度物理 · 物理学 2021-12-03 R. Carmina Monreal

We investigate the electron-phonon cooling power in disordered electronic systems with a special focus on mesoscopic superconducting proximity structures. Employing the quasiclassical Keldysh Green's function method, we obtain a general…

超导电性 · 物理学 2021-01-04 Danilo Nikolić , Denis M. Basko , Wolfgang Belzig

For a one-dimensional electron-phonon system we consider the photon absorption involving electronic excitations within the pseudogap energy range. In the framework of the adiabatic approximation for the electron - phonon interactions these…

强关联电子 · 物理学 2007-05-23 S. I. Matveenko , S. Brazovskii

We consider transport through a vibrating molecular quantum dot contacted to macroscopic leads acting as charge reservoirs. In the equilibrium and nonequilibrium regime, we study the formation of a polaron-like transient state at the…

强关联电子 · 物理学 2015-06-04 T. Koch , H. Fehske , J. Loos

Polar optical phonons are studied in the framework of the dielectric continuum approach for a prototypical quantum-dot/quantum-well (QD/QW) heterostructure, including the derivation of the electron-phonon interaction Hamiltonian and a…

介观与纳米尺度物理 · 物理学 2009-11-10 F. Comas , Nelson Studart

A method is proposed for the inclusion of electron correlation in the calculation of the temperature dependence of band structures arising from electron-phonon coupling. It relies on an efficient exploration of the vibrational phase space…

材料科学 · 物理学 2016-03-04 Bartomeu Monserrat

It is shown on the basis of the multiplicative renormalization-group method of two-loop order that the low-energy effective Hamiltonian of a strongly coupled local electron-phonon system is mapped to the two-channel Kondo model. A phonon is…

凝聚态物理 · 物理学 2009-10-28 Hiroaki Kusunose , Kazumasa Miyake

We demonstrate that electron-phonon interaction in quantum dots embedded in one-dimensional systems leads to pronounced, non-Markovian decoherence of optical transitions. The experiments we present focus on the lineshape of…

介观与纳米尺度物理 · 物理学 2012-09-18 Christophe Galland , Alexander Högele , Hakan E. Türeci , Ataç Imamoğlu

We study a setup where a single negatively-charged silicon-vacancy center in diamond is magnetically coupled to a low-frequency mechanical bending mode and via strain to the high-frequency phonon continuum of a semi-clamped diamond beam. We…

介观与纳米尺度物理 · 物理学 2017-01-12 K. V. Kepesidis , M. -A. Lemonde , A. Norambuena , J. R. Maze , P. Rabl

The critical temperature of high-$T_c$ superconductors is determined, at least in part, by the electron-phonon coupling. We include the effect of an exchange interaction between the electrons and calculate the renormalization of the bare…

凝聚态物理 · 物理学 2009-10-22 D. Manske , C. T. Rieck , D. Fay

The electronic structure, phonons, electron-phonon coupling, and superconductivity are theoretically studied in noncentrosymmetric superconductor ThCoC$_2$ as a function of pressure, in the pressure range 0 - 20 GPa. We found that the…

超导电性 · 物理学 2022-07-01 Gabriel Kuderowicz , Paweł Wójcik , Bartlomiej Wiendlocha

The temperature dependence below $T_{c}$ of the lineshape of optical phonons of different symmetry as seen in Raman scattering is investigated for superconductors with anisotropic energy gaps. It is shown that the symmetry of the…

凝聚态物理 · 物理学 2009-10-22 T. P. Devereaux

We report on the evidenced orbital mediated electron phonon coupling and band gap tuning in HoFe1-xCrxO3 compounds. From the room temperature Raman scattering, it is apparent that the electron-phonon coupling is sensitive to the presence of…

材料科学 · 物理学 2016-06-15 Ganesh Kotnana , S. Narayana Jammalamadaka

Superconductors without inversion symmetry in their crystal structure are known to exhibit unconventional properties. Recently, based on the measured temperature dependence of the magnetic field penetration depth, superconductivity in…

超导电性 · 物理学 2021-09-08 Gabriel Kuderowicz , Paweł Wójcik , Bartlomiej Wiendlocha

Structural phase transitions and soft phonon modes pose a longstanding challenge to computing electron-phonon (e-ph) interactions in strongly anharmonic crystals. Here we develop a first-principles approach to compute e-ph scattering and…

材料科学 · 物理学 2018-12-04 Jin-Jian Zhou , Olle Hellman , Marco Bernardi

Recently there has been an accumulation of experimental evidence in the high temperature superconductors suggesting the relevance of electron-phonon coupling in these materials. These findings challenge some well-held beliefs of what…

超导电性 · 物理学 2007-05-23 T. P. Devereaux , T. Cuk , Z. -X. Shen , N. Nagaosa