Non-Fermi-liquid behavior and double-exchange physics in orbital-selective Mott systems.
Non-Fermi-liquid behavior and double-exchange physics in orbital-selective Mott systems.
复制标题
DOI：
10.1103/physrevlett.95.206401
复制
发表时间：
2005-05
影响因子：
8.6
通讯作者：
S. Biermann;L. Medici;L. Medici;A. Georges
中科院分区：
文献类型：
--
作者：
S. Biermann;L. Medici;L. Medici;A. Georges
We study a multiband Hubbard model in its orbital-selective Mott phase, in which localized electrons in a narrow band coexist with itinerant electrons in a wide band. The low-energy physics of this phase is shown to be given by a generalized double-exchange model. The high-temperature disordered phase thus differs from a Fermi liquid, and displays a finite scattering rate of the conduction electrons at the Fermi level, which depends continuously on the spin anisotropy.
