Excitonic condensation in systems of strongly correlated electrons

0452088 - FZÚ 2016 RIV GB eng J - Journal Article
Kuneš, Jan
Excitonic condensation in systems of strongly correlated electrons.
Journal of Physics-Condensed Matter. Roč. 27, č. 33 (2015), s. 333201. ISSN 0953-8984. E-ISSN 1361-648X
Institutional support: RVO:68378271
Keywords : electronic correlations * exciton * Bose-Einstein condensation
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.209, year: 2015

The idea of exciton condensation in solids was introduced in the 1960s with the analogy of superconductivity in mind. While exciton supercurrents have been realised only in artificial quantum-well structures so far, the application of the concept of excitonic condensation to bulk solids leads to a rich spectrum of thermodynamic phases with diverse physical properties. In this review we discuss recent developments in the theory of exciton condensation in systems described by Hubbard-type models. In particular, we focus on the connections to their various strong-coupling limits that have been studied in other contexts, e.g. cold atoms physics. One of our goals is to provide a 'dictionary' that would allow the reader to efficiently combine results obtained in these different fields.
Permanent Link: http://hdl.handle.net/11104/0253118