Vortex-Antivortex Lattice in Ultracold Fermionic Gases
| Autor: | C. A. R. Sá de Melo, S. S. Botelho |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Optical lattice Condensed matter physics Condensed Matter::Other Lattice field theory FOS: Physical sciences General Physics and Astronomy BCS theory 01 natural sciences 010305 fluids & plasmas law.invention Condensed Matter - Other Condensed Matter Superfluidity law Condensed Matter::Superconductivity Lattice (order) 0103 physical sciences 010306 general physics Fermi gas Bose–Einstein condensate Other Condensed Matter (cond-mat.other) Phase diagram |
| Zdroj: | Physical Review Letters. 96 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.96.040404 |
| Popis: | We discuss ultra-cold Fermi gases in two dimensions, which could be realized in a strongly confining one-dimensional optical lattice. We obtain the temperature versus effective interaction phase diagram for an s-wave superfluid and show that, below a certain critical temperature T_c, spontaneous vortex-antivortex pairs appear for all coupling strengths. In addition, we show that the evolution from weak to strong coupling is smooth, and that the system forms a square vortex-antivortex lattice at a lower critical temperature T_M. Comment: Submitted to Physical Review Letters |
| Databáze: | OpenAIRE |
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