Effect of screening of the electron-phonon interaction on the temperature of Bose-Einstein condensation of intersite bipolarons
| Autor: | B. Yavidov, A. Kurmantayev, D. Alimov, B. Kurbanbekov, Sh. Ramonkulov |
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| Rok vydání: | 2013 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Condensed matter physics Strongly Correlated Electrons (cond-mat.str-el) Condensed Matter::Other Condensed Matter - Superconductivity Condensation Electron phonon FOS: Physical sciences Condensed Matter Physics Polaron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Electronic Optical and Magnetic Materials law.invention Superconductivity (cond-mat.supr-con) Condensed Matter - Strongly Correlated Electrons law Condensed Matter::Superconductivity Quasiparticle Condensed Matter::Strongly Correlated Electrons Limit (mathematics) Bose–Einstein condensate |
| DOI: | 10.48550/arxiv.1308.2331 |
| Popis: | Here we consider an interacting electron-phonon system within the framework of extended Holstein-Hubbard model at strong enough electron-phonon interaction limit in which (bi)polarons are the essential quasiparticles of the system. It is assumed that the electron-phonon interaction is screened and its potential has Yukawa-type analytical form. An effect of screening of the electron-phonon interaction on the temperature of Bose-Einstein condensation of the intersite bipolarons is studied for the first time. It is revealed that the temperature of Bose-Einstein condensation of intersite bipolarons is higher in the system with the more screened electron-phonon interaction. Comment: 6 pages, 4 figures |
| Databáze: | OpenAIRE |
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