Quantum Melting of a Wigner crystal of Rotating Dipolar Fermions in the Lowest Landau Level - Condensed Matter > Quantum GasesReportar como inadecuado




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Abstract: We have investigated the behavior and stability of a Wigner crystal ofrotating dipolar fermions in two dimensions. Using an ansatz wave function forthe ground state of rotating two-dimensional dipolar fermions, which occupyonly partially the lowest Landau level, we study the correlation energy,elastic moduli and collective modes of Wigner crystals in the lowest Landaulevel. We then calculate the mean square of the displacement vector of Wignercrystals. The critical filling factor, below which the crystalline state isexpected, is evaluated at absolute zero by use of the Lindeman-s criterion. Wefind that the particle hole crystal is locally stable for filling factor isless than 1-15 between filling factors 14-15 and 1, where the stable regimeof the crystal is much narrower than the result from Baranov, Fehrmann andLewenstein, Phys. Rev. Lett. 100, 200402 2008.



Autor: Szu-Cheng Cheng, Shih-Da Jheng, T. F. Jiang

Fuente: https://arxiv.org/







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