Spectral functions and optical conductivity of spinless fermions on a checkerboard lattice

We study the dynamical properties of spinless fermions on the checkerboard lattice. Our main interest is the limit of large nearest-neighbor repulsion V as compared with hopping |t|. The spectral functions show broad low-energy excitations which are due to the dynamics of fractionally charged excita...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physical review / B
1. Verfasser:	Pollmann, Frank (VerfasserIn)
Weitere Verfasser:	Fulde, Peter (VerfasserIn), Runge, Erich (VerfasserIn)
Format:	UnknownFormat
Sprache:	eng
Veröffentlicht:	2006
Schlagworte:
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Bestellen

Nach Artikeln suchen

Beschreibung
Zusammenfassung:	We study the dynamical properties of spinless fermions on the checkerboard lattice. Our main interest is the limit of large nearest-neighbor repulsion V as compared with hopping \|t\|. The spectral functions show broad low-energy excitations which are due to the dynamics of fractionally charged excitations. Furthermore, it is shown that the fractional charges contribute to the electrical current density.
Beschreibung:	9
ISSN:	2469-9950