Authors
Jong E. Han, Mark Jarrell, Daniel L. Cox
Publication date
1998
Journal
Phys Rev B
Volume
58
Pages
R4199
Publisher
American Physical Society
Description
Using the quantum Monte Carlo technique we compute thermodynamics and spectra for the orbitally degenerate Hubbard model in infinite spatial dimensions. With increasing orbital degeneracy we find in the one-particle spectra broader Hubbard bands (consistent with increased kinetic energy), a narrowing Mott gap, and increasing quasiparticle spectral weight. Hund’s rule exchange coupling decreases the critical on-site Coulomb energy for the Mott transition. The metallic regime resistivity for twofold degeneracy is quadratic in temperature at low temperatures.
Total citations
19981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023138587812104552715274692434