FINITE-TEMPERATURE OPTICAL CONDUCTIVITY OF THE 2-DIMENSIONAL HUBBARD-MODEL

Authors
LI WZ CHEN F XU TF YING HP
Citation
Wz. Li et al., FINITE-TEMPERATURE OPTICAL CONDUCTIVITY OF THE 2-DIMENSIONAL HUBBARD-MODEL, Communications in Theoretical Physics, 22(3), 1994, pp. 273-276
Citations number
10
Categorie Soggetti
Physics
Journal title
Communications in Theoretical Physics → ACNP
ISSN journal
02536102
Volume
22
Issue
3
Year of publication
1994
Pages
273 - 276
Database
ISI
SICI code
0253-6102(1994)22:3<273:FOCOT2>2.0.ZU;2-S
Abstract
The finite-temperature optical conductivity of the two-dimensional Hub bard model is studied by means of the grand canonical quantum Monte Ca rlo method. Results are reported for the half-filled and nonhalf-fille d band. The formation and variation of Hubbard gap are observed. For t he half-filled band case, our results support that there exists a high -temperature insulator-metal transition.