The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.
Flat Bands and Wigner Crystallization in the Honeycomb Optical Lattice
Open accessAbstract
We study the ground states of cold atoms in the tight-binding bands built from p orbitals on a two dimensional honeycomb optical lattice. The band structure includes two completely flat bands. Exact many-body ground states with on-site repulsion can be found at low particle densities, for both fermions and bosons. We find crystalline order at n=1/6 with a sqrt[3] x sqrt[3] structure breaking a number of discrete lattice symmetries. In fermionic systems, if the repulsion is strong enough, we find the bonding strength becomes dimerized at n=1/2. Experimental signatures of crystalline order can be detected through the noise correlations in time of flight experiments.
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Cites
Two-dimensional gas of massless Dirac fermions in graphene
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Self-citationSpinor Bosonic Atoms in Optical Lattices: Symmetry Breaking and Fractionalization
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Self-citation
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Metadata
- Authors
- Wu, C., Bergman, D., Balents, L., & Das Sarma, S.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-08-16
- Volume
- 99
- Issue
- 7
- Pages
- 070401-070401
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2011570762
- Cited by
- 549
- References
- 17
- FWCI
- 8.76
- Type
- journal article
- Language
- en
- Open access
- green
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