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On the phase diagram of a two‐dimensional electron gas near integer fillings and fractions such as 1/5 and 1/7
Author(s) -
Claro Francisco,
Cabo Alejandro,
March Norman H.
Publication year - 2005
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200461735
Subject(s) - phase diagram , integer (computer science) , quantum hall effect , compressibility , condensed matter physics , electron , crystal (programming language) , phase (matter) , fermi gas , physics , diagram , wigner crystal , mathematics , quantum mechanics , thermodynamics , computer science , statistics , programming language
The phase diagram of the 2DEG at high magnetic fields is discussed in the light of recent experiments showing the presence of crystalline phases around integer as well as certain fractional fillings. We suggest that a Hall crystal is a proper competing phase compatible with the odd denominator rule that characterizes the fractional quantum Hall effect, and that near integer filling a pinned crystal coexists with an incompressible fluid with no longitudinal resistance. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)