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Phase diagram of the low-density two-dimensional homogeneous electron gas

Research output: Contribution to journalJournal article

Published

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Journal publication date24/03/2009
JournalPhysical Review Letters
Journal number12
Volume102
Number of pages4
Original languageEnglish

Abstract

We use quantum Monte Carlo methods to calculate the zero-temperature phase diagram of the two-dimensional homogeneous electron gas. We find a transition from a paramagnetic fluid to an antiferromagnetic triangular Wigner crystal at density parameter rs=31(1)  a.u. and a transition to a ferromagnetic crystal at rs=38(5)  a.u. The fully spin-polarized fluid is never stable. We search for, but do not find, the ferromagnetic “hybrid” phase proposed by H. Falakshahi and X. Waintal [ Phys. Rev. Lett. 94 046801 (2005)].

Bibliographic note

© 2009 The American Physical Society