1998/10/13 by Eduardo Fradkin, Steven A. Kivelson · 27 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.59.8065
published as Phys. Rev. B 59, 8065 (1999) · 9 pages, 3 figures
arxiv created 1998/10/13 · openalex publication_date 1999/03/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Mean-field calculations for the two-dimensional electron gas in a large magnetic field with a partially filled Landau level with index N>~2 consistently yield ``stripe-ordered'' charge-density wave ground states, for much the same reason that frustrated phase separation leads to stripe-ordered states in doped Mott insulators. We have studied the effects of quantum and thermal fluctuations about such a state and show that they can lead to a set of electronic liquid crystalline states, particularly a stripe-nematic phase, which is stable at T>0. Recent measurements of the longitudinal resistivity of a set of quantum Hall devices have revealed that these systems spontaneously develop, at low temperatures, a very large anisotropy. We interpret these experiments as evidence for a stripe nematic phase, and propose a general phase diagram for this system.