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We used our developed AI search engine~(InvDesFlow) to perform extensive investigations regarding ambient stable superconducting hydrides. A cubic structure Li$_2$AuH$_6$ with Au-H octahedral motifs is identified to be a candidate. After…

超导电性 · 物理学 2025-05-15 Zhenfeng Ouyang , Bo-Wen Yao , Xiao-Qi Han , Peng-Jie Guo , Ze-Feng Gao , Zhong-Yi Lu

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

Electron-phonon interaction has been well known to create major resistance to electron transport in metals and semiconductors, whereas less studies were directed to its effect on the phonon transport, especially in semiconductors. We…

材料科学 · 物理学 2015-03-25 Bolin Liao , Bo Qiu , Jiawei Zhou , Samuel Huberman , Keivan Esfarjani , Gang Chen

State-of-the-art model Hamiltonians, like Fr\"ohlich's, or density functional theory approaches to electron-phonon interaction suffer from a severe overscreening error. This is due to the incorrect treatment of the screening of the ionic…

材料科学 · 物理学 2023-11-17 Fulvio Paleari , Andrea Marini

We analyze the heat power $P$ between electrons and phonons in thin metallic films deposited on free-standing dielectric membranes in a temperature range in which the phonon gas has a quasi two-dimensional distribution. The quantization of…

介观与纳米尺度物理 · 物理学 2016-02-17 Dragos-Victor Anghel , Sergiu Cojocaru

We develop a unified treatment of the piesoelectric coupling between two-dimensional electrons and bulk phonons in both cases of zero and strong magnetic fields, the latter corresponding to even denominator filling fractions. In contrast to…

介观与纳米尺度物理 · 物理学 2009-10-30 D. V. Khveshchenko , Michael Reizer

The half-Heusler (hH) compounds are currently considered promising thermoelectric (TE) materials due to their favorable thermopower and electrical conductivity. Accurate estimates of these properties are therefore highly desirable and…

材料科学 · 物理学 2026-04-07 Vinod Kumar Solet , Sudhir K. Pandey

Thermoelectric properties of graphene nanoribbons with periodic edge vacancies and antidot lattice are investigated. The electron-phonon interaction is taken into account in the framework of the Hubbard-Holstein model with the use of the…

材料科学 · 物理学 2016-11-23 D. V. Kolesnikov , D. A. Lobanov , V. A. Osipov

Since conventional superconductivity is mediated by phonons, their role in the mechanism of high temperature superconductivity has been considered very early after the discovery of the cuprates. The initial consensus was that phonons could…

超导电性 · 物理学 2010-03-23 D. Reznik

The title compound is investigated by specific heat measurements in the normal and superconducting state supplemented by upper critical field transport, susceptibility and magnetization measurements. From a detailed analysis including also…

In this article in the framework of generalized Frolich model we consider electron-spin-phonon system. A parameter of electron-spin-phonon interaction is found. It is shown its interrelation with experiments on isotope-effect on high…

超导电性 · 物理学 2007-05-23 L. Joukovskaya

Superconducting systems based on attractive electron-phonon interactions are the ones which are best understood at a fundamental level. They are well described using Eliashberg theory, which, unlike BCS theory, explicitly takes into account…

超导电性 · 物理学 2025-05-28 Ingvar Zappacosta , Matthew Houtput , Jacques Tempere

We present a first principles investigation of the lattice dynamics and electron-phonon coupling of the superconductor MgB_2 and the isostructural AlB_2 within the framework of density functional perturbation theory using a mixed-basis…

超导电性 · 物理学 2009-11-07 K. -P. Bohnen , R. Heid , B. Renker

The electron-phonon interaction is a major factor influencing the competition between collective instabilities in correlated-electron materials, but its role in driving high-temperature superconductivity in the cuprates remains poorly…

By using variational wave functions and quantum Monte Carlo techniques, we investigate the interplay between electron-electron and electron-phonon interactions in the two-dimensional Hubbard-Holstein model. Here, the ground-state phase…

强关联电子 · 物理学 2017-11-28 Seher Karakuzu , Luca F. Tocchio , Sandro Sorella , Federico Becca

Very recently, a report on possible room-temperature superconductivity in N-doped lutetium hydrides near 1 GPa pressure has drawn lots of attentions. To date, the superconductivity is not confirmed under relatively low pressure in…

超导电性 · 物理学 2023-06-27 Zhenfeng Ouyang , Miao Gao , Zhong-Yi Lu

Although the density functional theory plus Hubbard $U$ correction method (DFT+U) is broadly used to study electronic structure of strongly correlated materials, the extension of this method to electron-phonon $g$ matrices has received…

强关联电子 · 物理学 2026-05-21 Jiale Chen , Youyou Tu , Chengliang Xia , Jin Zhao , Hanghui Chen

Phonon carrier interactions can have significant impact on device performance. They can be probed by measuring the phonon lifetime, which reflects the interaction strength of a phonon with other quasi-particles in particular charge carriers…

介观与纳米尺度物理 · 物理学 2010-01-13 Dong-Hun Chae , Benjamin Krauss , Klaus von Klitzing , Jurgen H. Smet

The topic of this review is the effects of electron-phonon interaction (EPI) on the transport properties of molecular nano-conductors. A nano-conductor connects to two electron leads and two phonon leads, possibly at different temperatures…

介观与纳米尺度物理 · 物理学 2015-04-07 Jing-Tao Lü , Hangbo Zhou , Jin-Wu Jiang , Jian-Sheng Wang

We calculate the critical temperature $T_c$ and the superconducting energy gaps $\Delta_n$ of a thin film superconductor system, where $\Delta_n$ is the superconducting energy gap of the $n$-th subband. Since the quantization of both the…

超导电性 · 物理学 2009-10-31 E. H. Hwang , S. Das Sarma , M. A. Stroscio