Magnetically Ordered State of Cold Fermions on a Decorated Square Lattice

被引：0
|
作者：
Kazuto Noda
Akihisa Koga
Norio Kawakami
Thomas Pruschke
机构：
[1] Kyoto University,Department of Physics, Graduate School of Science
[2] Tokyo Institute of Technology,Department of Physics
[3] Universität Göttingen,Institut für Theoretische Physik
来源：
Journal of Low Temperature Physics | 2010年 / 158卷
关键词：
Optical lattice; Fermion; Ferromagnetism;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We study two-component ultracold fermions with repulsive interactions, which are loaded into a decorated square lattice. By combining the real-space dynamical mean-field theory with the numerical renormalization group method, we discuss magnetic properties in the system. It is clarified how the ferromagnetically ordered ground state, which is stabilized by a flat band mechanism, is adiabatically connected to the ferrimagnetically ordered state expected in the strong coupling limit.
引用
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页码：79 / 84
页数：5
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