由电子关联驱动的室温超导T

Room-temperature-superconducting T driven by electron correlation.

作者信息

Kim Hyun-Tak

机构信息

Metal-Insulator-Transition & Quantum Lab., Electronics and Telecommunications Research Institute, Daejeon, 34129, South Korea.

出版信息

Sci Rep. 2021 May 14;11(1):10329. doi: 10.1038/s41598-021-88937-7.

DOI:10.1038/s41598-021-88937-7

PMID:33990629

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8121790/

Abstract

Room-temperature-superconducting T measured by high pressure in hydrides can be theoretically explained by a Brinkman-Rice (BR)-Bardeen-Cooper-Schrieffer (BCS) T combining both the generalized BCS T and the diverging effective mass, m*/m = 1/(1 - (U/U)), with the on-site Coulomb interaction U in the BR picture. A transition from U in a correlated metal of the normal state to U in the superconducting state can lead to superconductivity, which can be caused by volume contraction induced by high pressure or low temperature.

摘要

通过高压测量的氢化物中的室温超导转变温度(T)，在理论上可以用布林克曼 - 赖斯（BR） - 巴丁 - 库珀 - 施里弗（BCS）理论来解释，该理论结合了广义BCS转变温度和发散的有效质量(m^*/m = 1/(1 - (U/U)))以及BR模型中的在位库仑相互作用(U)。从正常态关联金属中的(U)到超导态中的(U)的转变会导致超导性，这可能是由高压或低温引起的体积收缩导致的。