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Hybrid phase at the quantum melting of the Wigner crystal

Houman Falakshahi·Xavier Waintal
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Abstract

We study the quantum melting of the two-dimensional Wigner crystal using a fixed node quantum Monte-Carlo approach. In addition to the two already known phases (Fermi liquid at large density and Wigner crystal at low density), we find a third stable phase at intermediate values of the density. The third phase has hybrid behaviors in between a liquid and a solid. This hybrid phase has the nodal structure of a Slater determinant constructed out of the bands of a triangular lattice.

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Houman Falakshahi, Xavier Waintal. 2004-06-24. Hybrid phase at the quantum melting of the Wigner crystal. https://doi.org/10.1103/physrevlett.94.046801

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