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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/50084
Record Status
Checked
Record Id
50084
Title
Does a Fermi liquid on a half-filled Landau level have Pomeranchuk instabilities?
Contributors
J Quintanilla (STFC Rutherford Appleton Lab.)
,
O Ciftja (Prairie View A&M U.)
Abstract
We present a theory of spontaneous Fermi surface deformations for half-filled Landau levels (filling factors of the form $\nu=2n+1/2$). We assume the half-filled level to be in a compressible, Fermi liquid state with a circular Fermi surface. The Landau level projection is incorporated via a modified effective electron-electron interaction and the resulting band structure is described within the Hartree-Fock approximation. We regulate the infrared divergences in the theory and probe the intrinsic tendency of the Fermi surface to deform through Pomeranchuk instabilities. We find that the corresponding susceptibility never diverges, though the system is asymptotically unstable in the $n \to \infty$ limit.
Organisation
ISIS
,
ISIS-THEORY
,
STFC
Keywords
Physics
,
73.20.Dx
,
64.70.Md
,
73.43.-f
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Preprint
2009.
http://arxiv.org/abs/0904.0658
2009
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