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A new non-ballistic analytical model for the intrinsic channel region of MOSFET-like single-walled carbon-nanotube field-effect transistors with ohmic contacts has been developed which overcomes the limitations of existing models and…

介观与纳米尺度物理 · 物理学 2016-03-01 Igor Bejenari , Martin Claus

We compute the transient dynamics of phonons in contact with high energy "hot" charge carriers in 12 polar and non-polar semiconductors, using a first-principles Boltzmann transport framework. For most materials, we find that the decay in…

介观与纳米尺度物理 · 物理学 2017-10-03 Sridhar Sadasivam , Maria K. Y. Chan , Pierre Darancet

This article reviews the theory of electron-phonon interactions in solids from the point of view of ab-initio calculations. While the electron-phonon interaction has been studied for almost a century, predictive non-empirical calculations…

材料科学 · 物理学 2017-03-08 Feliciano Giustino

Polarons, which arise from the self-trapping interaction between electrons and lattice distortions in a solid, have been known and extensively investigated for nearly a century. Nevertheless, the study of polarons continues to be an active…

We study theoretically and experimentally the dependence of the electron-phonon interaction in Na$_x$CoO$_2$ on the sodium concentration $x$. For the two oxygen phonon modes found in Raman experiments, $A_{1g}$ and $E_{1g}$, we calculate…

强关联电子 · 物理学 2009-11-13 A. Donkov , M. M. Korshunov , I. Eremin , P. Lemmens , V. Gnezdilov , F. C. Chou , C. T. Lin

We consider the prospects for quantum simulation of condensed matter models exhibiting strong electron-phonon coupling using a hybrid platform of trapped laser-cooled ions interacting with an ultracold atomic gas. This system naturally…

量子气体 · 物理学 2020-09-07 Krzysztof Jachymski , Antonio Negretti

The coupling between electrons and phonons plays important roles in physics, chemistry and biology. However, the accurate calculation of the electron-phonon coupling constants is computationally expensive as it involves solving the…

材料科学 · 物理学 2016-08-31 B. J. Powell , Mark R. Pederson , Tunna Baruah

A nonperturbative dynamical coupling approach based on tight-binding molecular dynamics is used to evaluate the electron-ion (electron-phonon) coupling parameter in irradiated semiconductors as a function of the electronic temperature up to…

材料科学 · 物理学 2023-10-25 Nikita Medvedev

The dynamical mean-field method is used to formulate a computationally tractable theory of electron-phonon interactions in systems with arbitrary local electron-electron interactions in the physically relevant adiabatic limit of phonon…

强关联电子 · 物理学 2007-05-23 A. Deppeler , A. J. Millis

We study the principal aspects of the interaction between acoustic phonons and two-dimensional electrons in quantizing magnetic fields corresponding to even denominator fractions. Using the composite fermion approach we derive the vertex of…

介观与纳米尺度物理 · 物理学 2016-08-31 D. V. Khveshchenko , M. Reizer

The nonlocal electron-phonon couplings in organic semiconductors responsible for the fluctuation of intermolecular transfer integrals has been the center of interest recently. Several irreconcilable scenarios coexist for the description of…

材料科学 · 物理学 2021-08-04 Weitang Li , Jiajun Ren , Zhigang Shuai

Photoemission and phonon spectroscopies have yielded widely varying estimates of the electron-phonon coupling constant \lambda\ on the surfaces of topological insulators, even for a particular material and technique. We connect the results…

介观与纳米尺度物理 · 物理学 2014-02-27 Colin Howard , M. El-Batanouny

We consider a one-dimensional system of electrons interacting via a short-range repulsion and coupled to phonons close to the metal-insulator transition at half filling. We argue that the metal-insulator transition can be described as a…

凝聚态物理 · 物理学 2015-06-25 M. Fabrizio , C. Castellani , C. Di Castro

The interplay of the electron-phonon interaction and of the double and super exchange magnetic effects is analyzed in the $La_{1-x}Ca_xMnO_3$ perovskites with $0<x<0.5$. By using an analytical variational scheme that allows to treat the…

强关联电子 · 物理学 2009-10-31 V. Cataudella , G. De Filippis , G. Iadonisi

He atom scattering has been shown to be a sensitive probe of electron-phonon interaction properties at surfaces. Here it is shown that measurements of the thermal attenuation of the specular He atom diffraction peak (the Debye-Waller…

超导电性 · 物理学 2017-12-20 G. Benedek , Salvador Miret-Artes , J. R. Manson , J. P. Toennies

We use polarized magneto-Raman scattering to study purely electronic excitations and the electron-phonon coupling in bulk graphite. At a temperature of 4.2 K and in magnetic fields up to 28 T we observe $K$-point electronic excitations…

介观与纳米尺度物理 · 物理学 2015-05-30 P. Kossacki , C. Faugeras , M. Kühne , M. Orlita , A. A. L. Nicolet , J. M. Schneider , D. M. Basko , Y. I. Latyshev , M. Potemski

The scattering of lattice excitations (phonons) with the photoexcited charge carriers is of a major concern in optoelectronic devices. Here, the resonant Raman scattering will be utilized to study an exciton-phonon interaction in GaN…

We study the impact of phonon anharmonicity on the electronic dynamics of soft materials using a nonperturbative quantum-classical approach. The method is applied to a one-dimensional model of doped organic semiconductors with low-frequency…

材料科学 · 物理学 2025-09-24 Jonathan H. Fetherolf , Petra Shih , Timothy C. Berkelbach

We present a general coupled electron-phonon Boltzmann transport equations (BTEs) scheme designed to capture the mutual drag of the two interacting systems. By combining density functional theory based first principles calculations of…

材料科学 · 物理学 2020-02-19 Nakib H. Protik , David A. Broido

Advances in light sources and time resolved spectroscopy have made it possible to excite specific atomic vibrations in solids and to observe the resulting changes in electronic properties but the mechanism by which phonon excitation causes…

超导电性 · 物理学 2017-05-05 Dante M. Kennes , Eli Y. Wilner , David R. Reichman , Andrew J. Millis