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We discuss the possibility of superconductivity in graphene taking into account both electron-phonon and electron-electron Coulomb interactions. The analysis is carried out assuming that the Fermi energy is far away from the Dirac points,…

超导电性 · 物理学 2011-12-13 M. Einenkel , K. B. Efetov

We study the role of the superconducting proximity effect on the electron-phonon energy exchange in diffusive normal metals (N) attached to superconductors (S). The proximity effect modifies the spectral response of the normal metal, in…

介观与纳米尺度物理 · 物理学 2009-03-16 T. T. Heikkila , F. Giazotto

Buckminsterfullerene compounds exibit remarkable physics at low temperatures, e.g. high temperature superconductivity in alkali-fullerenes, and ferromagnetism in TDAE -C60. Here we review recent theoretical studies of electron correlations…

强关联电子 · 物理学 2008-02-03 Assa Auerbach

This letter reports the unexpectedly strong electron-phonon coupling (EPC) and the highest $T_c$ record ($\approx$ 38 K) among the MXenes revealed in the 2H-Mo$_2$N under biaxial stress. At first, its excellent mechanical properties are…

Photoemission studies of graphene have resulted in a long-standing controversy concerning the strength of the experimental electron-phonon interaction in comparison with theoretical calculations. Using high-resolution angle-resolved…

材料科学 · 物理学 2015-05-30 David A. Siegel , Choongyu Hwang , Alexi V. Fedorov , Alessandra Lanzara

We consider electronic structure and superconductivity aspects in field-doped polyacenes (PA) and C60. Within a modified Thomas-Fermi approach for typical experimental values of the surface charge density the injected charge is confined to…

超导电性 · 物理学 2007-05-23 S. -L. Drechsler , H. Rosner , G. Paasch , J. Malek , S. V. Shulga , H. Eschrig

We present a description of the electronic structure of xenon within the density-functional theory formalism with the goal of accurately modeling dark-matter-induced ionisation in liquid xenon detectors. We compare the calculated electronic…

高能物理 - 唯象学 · 物理学 2025-09-03 Riccardo Catena , Luca Marin , Marek Matas , Nicola A. Spaldin , Einar Urdshals

Using a multistep renormalization group method, we study the low-temperature phases of the interacting one-dimensional (1D) electron gas coupled to phonons. We obtain analytic expressions for the weak-coupling quantum phase boundaries of…

强关联电子 · 物理学 2007-05-23 Ian P. Bindloss

Superconductivity in two-dimensional compounds is widely concerned, not only due to its application in constructing nano-superconducting devices, but also for the general scientific interests. Very recently, borophene (two-dimensional boron…

超导电性 · 物理学 2017-01-13 Miao Gao , Qi-Zhi Li , Xun-Wang Yan , Jun Wang

The effect of a solid-vacuum interface on the properties of a strongly coupled electron-phonon system is analyzed using dynamical mean-field theory to solve the Holstein model in a semi-infinite cubic lattice. Polaron formation is found to…

强关联电子 · 物理学 2015-05-13 Reza Nourafkan , Massimo Capone , Nasser Nafari

On the basis of an analysis of theoretical and numerical studies of model systems, and of experiments on superconductivity in doped C$_{60}$, polyacenes, and the cuprate high temperature superconductors, we propose that a purely electronic…

超导电性 · 物理学 2009-10-31 Sudip Chakravarty , Steven A. Kivelson

Rare-earth superhydrides have attracted considerable attention because of their high critical superconducting temperature under extreme pressures. They are known to have localized valence electrons, implying strong electronic correlations.…

超导电性 · 物理学 2026-01-21 Siyu Chen , Yao Wei , Bartomeu Monserrat , Jan M. Tomczak , Samuel Poncé

A theoretical approach using ab initio calculations has been applied to study the interaction of an ultra-short laser pulse with the metal alloy Fe$_{0.72}$Cr$_{0.18}$Ni$_{0.1}$ (AISI 304). The electronic structure is simulated by taking…

材料科学 · 物理学 2016-04-20 Jan Winter , Jürgen Sotrop , Stephan Borek , Heinz P. Huber , Jan Minár

Intercalation of two-dimensional (2D) iron chalcogenides with molecular species requires disentangling electronic and structural contributions to understand the puzzling limit to superconducting transition temperature ($T_c$) at the…

Fullerenes are known to be polarizable due to the strained carbon-carbon bonds and high surface curvature. Electronic polarization of fullerenes is of steady practical importance, since it leads to non-additive interactions and, therefore,…

材料科学 · 物理学 2015-01-21 Vitaly V. Chaban , Eudes Eterno Fileti

The effect of the exchange interaction on the vibrational properties and on the electron-phonon coupling were investigated in several recent works. In most of the case, exchange tends to enhance the electron-phonon interaction, although the…

超导电性 · 物理学 2018-03-14 Betul Pamuk , Paolo Zoccante , Jacopo Baima , Francesco Mauri , Matteo Calandra

Superconductivity in novel bismuth-sulphur superconductors has attracted large research efforts, both experimental and theoretical, but a consensus on the nature of superconductivity in these materials has yet to be reached. Using density…

Using first-principles density functional theory calculations, we investigate the geometries, electronic structures, and thermodynamic stabilities of substitutionally doped phosphorene sheets with group III, IV, V, and VI elements. We find…

计算物理 · 物理学 2016-03-17 Weiyang Yu , Zhili Zhu , Chun-Yao Niu , Chong Li , Jun-Hyung Cho , Yu Jia

In this work we present the thermodynamic properties of the superconducting state in phosphorene. In particular, we have examined the electron doped ($n_{D}=1.3\times 10^{14} \rm{cm^{-2}}$) and biaxially strained (4 %) monolayer of black…

超导电性 · 物理学 2019-05-01 Kamila A. Szewczyk , Adam Z. Kaczmarek , Ewa A. Drzazga

Hole-doped high-temperature copper oxide-based superconductors (cuprates) exhibit complex phase diagrams where electronic orders like a charge density wave (CDW) and superconductivity (SC) appear at low temperatures. The origins of these…

强关联电子 · 物理学 2024-02-12 Saheli Sarkar