Optical response in the excitonic insulating state: Variational cluster approach

Optical responses in an excitonic insulating (EI) system with strong electron correlation are studied. We adopt the two-orbital Hubbard model with a finite energy difference between the two orbitals where the spin state degree of freedom exists. This model is analyzed by the variational cluster appr...

Ausführliche Beschreibung

Bibliographische Detailangaben

Veröffentlicht in:	Physical review. B 2020-03, Vol.101 (12), p.1, Article 125117
Hauptverfasser:	Li, Hengyue, Otsuki, Junya, Naka, Makoto, Ishihara, Sumio
Format:	Artikel
Sprache:	eng
Schlagworte:	Clusters Correlation analysis Order parameters Phase diagrams
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!