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Title: Effect of sharp structure in the electronic density of states on the electron--photon coupling in high T/sub c/ superconductors

Abstract

The evidence for sharp structure in the electronic density of states N(epsilon) of certain classes of high T/sub c/ superconductors is based on the normal state temperature dependence of the spin susceptibility chi, electronic specific-heat coefficient $gamma$, electrical resistivity rho, and nuclear spin- lattice relaxation rate 1/T$sub 1$. Model calculations of chi, $gamma$, rho, and T$sub 1$ in the rigid N(epsilon) approximation and of chi and $gamma$ for a temperature dependent N(epsilon) are presented for V$sub 3$Ga and V$sub 3$Si. The model calculations were used to calculate the explicit temperature dependence of the electron mass enhancement and the renormalized electronic specific heat coefficient. The temperature dependence of the dielectric screening, which can have an important effect on renormalizing the phonon frequencies at low temperatures, is also discussed. (auth)

Authors:
Publication Date:
Research Org.:
Argonne National Lab., Ill. (USA)
OSTI Identifier:
4117866
Report Number(s):
CONF-751212-4
NSA Number:
NSA-33-012603
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: International conference on low lying lattice vibrational models and their relationship to superconductivity and ferroelectricity, San Juan, Puerto Rico, 1 Dec 1975; Other Information: Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N50230* -Metals, Ceramics, & Other Materials-Metals & Alloys-Properties, Structure & Phase Studies; N66200 -Physics (Low Temperature)-Superconductivity; 360104* -Materials-Metals & Alloys-Physical Properties; *VANADIUM BASE ALLOYS- ELECTRONIC STRUCTURE; COUPLING; ELECTRIC CONDUCTIVITY; ELECTRONIC SPECIFIC HEAT; INTERMETALLIC COMPOUNDS; PHONONS; SILICON ALLOYS; SPIN- LATTICE RELAXATION; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE GALLIUM ALLOYS

Citation Formats

Fradin, F Y. Effect of sharp structure in the electronic density of states on the electron--photon coupling in high T/sub c/ superconductors. United States: N. p., 1975. Web.
Fradin, F Y. Effect of sharp structure in the electronic density of states on the electron--photon coupling in high T/sub c/ superconductors. United States.
Fradin, F Y. 1975. "Effect of sharp structure in the electronic density of states on the electron--photon coupling in high T/sub c/ superconductors". United States. https://www.osti.gov/servlets/purl/4117866.
@article{osti_4117866,
title = {Effect of sharp structure in the electronic density of states on the electron--photon coupling in high T/sub c/ superconductors},
author = {Fradin, F Y},
abstractNote = {The evidence for sharp structure in the electronic density of states N(epsilon) of certain classes of high T/sub c/ superconductors is based on the normal state temperature dependence of the spin susceptibility chi, electronic specific-heat coefficient $gamma$, electrical resistivity rho, and nuclear spin- lattice relaxation rate 1/T$sub 1$. Model calculations of chi, $gamma$, rho, and T$sub 1$ in the rigid N(epsilon) approximation and of chi and $gamma$ for a temperature dependent N(epsilon) are presented for V$sub 3$Ga and V$sub 3$Si. The model calculations were used to calculate the explicit temperature dependence of the electron mass enhancement and the renormalized electronic specific heat coefficient. The temperature dependence of the dielectric screening, which can have an important effect on renormalizing the phonon frequencies at low temperatures, is also discussed. (auth)},
doi = {},
url = {https://www.osti.gov/biblio/4117866}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1975},
month = {Wed Jan 01 00:00:00 EST 1975}
}

Conference:
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