On the Boson-Fermion resonant model on a lattice
Authors:
- Roman Micnas
Abstract
We review briefly the properties of a mixture of mutually interacting bosons (bound electron pairs) and itinerant fermions on a lattice (the boson-fermion model). The calculations of the superconducting phase transition temperature (Tc) and the phase diagram are the main concern. The self-consistent T-matrix method is applied to determine the superconducting critical temperature from a pseudogap phase. The method takes into account the pairing fluctuations effects. The T-matrix results for Tc are given for a three-dimensional (3-D) cubic lattice with tight-binding dispersion of electrons and standard bosons, and they are also compared with those of the BCS- mean-field approximation. Our results describe the BCS-Bose-Einstein condensation crossover in the boson-fermion mixture with resonant interaction. The energy scales involved in the pseudogap formation are also analysed.
- Record ID
- UAMbd40789565d748fca9d7ec046362944a
- Author
- Journal series
- Philosophical Magazine, ISSN 1478-6435, [1478-6443, 0141-8610, 1460-6992, 1364-2812, 1463-6417]
- Issue year
- 2015
- Vol
- 95
- Pages
- 622-632
- ASJC Classification
- ; ; ; ; ; ;
- DOI
- DOI:10.1080/14786435.2014.983574 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 30
- Score source
- journalList
- Score
- Publication indicators
- = 4; = 4; : 2015 = 0.985; : 2015 (2 years) = 1.632 - 2015 (5 years) =1.705
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAMbd40789565d748fca9d7ec046362944a/
- URN
urn:amu-prod:UAMbd40789565d748fca9d7ec046362944a
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.