Realizing the strongly correlated $d$-Mott state in a fermionic cold atom optical lattice

Details Realizing the strongly correlated $d$-Mott state in a fermionic cold atom optical lattice Realizing the strongly correlated $d$-Mott state in a fermionic cold atom optical lattice

2008-05-27

arxiv.org/abs/0805.4198v2

Phys. Rev. Lett. 101, 150406 (2008) v2 is final version

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.101.150406

We show that a new state of matter, the d-wave Mott-insulator state (d-Mott state) (introduced recently by [H. Yao, W. F. Tsai, and S. A. Kivelson, Phys. Rev. B 76, 161104 (2007)]), which is characterized by a non-zero expectation value of a local plaquette operator embedded in an insulating state, can be engineered using ultra-cold atomic fermions in two-dimensional double-well optical lattices. We characterize and analyze the parameter regime where the $d$-Mott state is stable. We predict the testable signatures of the state in the time-of-flight measurements.

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