Dielectric Properties and Electron Spectrum of the Müller Model in the High-Temperature Superconductivity Theory

• Authors: I. Stasyuk , A. Shvaika
• Languages of publication: EN

Abstracts

EN

The paper is devoted to the investigation of the single-electron excitation spectrum, effective exchange interaction and dielectric susceptibility of the Muller model for high-temperature superconductivity. It is shown that the interaction with the anharmonic vibration mode leads to the additional splitting of the electron bands and their narrowing. The sign of the effective exchange interaction between electrons depends on the local state of the vibration subsystem. The electron and pseudospin (lattice) contributions to the transverse dielectric susceptibility are investigated.

Keywords

EN

74.65.+n; 71.45.Gm

Discipline

• 71.45.Gm: Exchange, correlation, dielectric and magnetic response functions, plasmons

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1993
• Volume: 84
• Issue: 2
• Pages: 293-313

Dates

published

1993-08

received

1992-10-05

(unknown)

1993-04-30

Contributors

author

I. Stasyuk

• Institute for Condensed Matter Physics, Ukrainian Academy of Sciences, Svientsitsky St. 1, Lviv 290011, Ukraine

author

A. Shvaika

• Institute for Condensed Matter Physics, Ukrainian Academy of Sciences, Svientsitsky St. 1, Lviv 290011, Ukraine

Identifiers

DOI

10.12693/APhysPolA.84.293