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Ferromagnetism of Cold Fermions Loaded Into a Decorated Square Lattice by Noda, Kazuto; Koga, Akihisa; Kawakami, Norio; Pruschke, Thomas is a scholarly article available to read on EtoBox.

What is Ferromagnetism of Cold Fermions Loaded Into a Decorated Square Lattice about?

We investigate two-component ultracold fermions loaded into a decorated square lattice, which are described by the Hubbard model with repulsive interactions and nearest neighbor hoppings. By combining the real-space dynamical mean-field theory with the numerical renormalization group method, we discuss how a ferromagnetically ordered ground state in the weak coupling regime, which originates from the existence of a dispersionless band, is adiabatically connected to a Heisenberg ferrimagnetic state in the strong coupling limit. The effects of level splitting and hopping imbalance are also addressed.

Author

Noda, Kazuto; Koga, Akihisa; Kawakami, Norio; Pruschke, Thomas

Published

2010

Language

EN