Critical supercurrents and self organization in quantum Hall bilayers
Citation:
P. R. Eastham, N. R. Cooper, and D. K. K. Lee, Critical supercurrents and self organization in quantum Hall bilayers, Physical Review Letters, 105, 2010, 23680-Download Item:
Abstract:
We present a theory of interlayer tunneling in a disordered quantum Hall bilayer at total filling factor
one, allowing for the effect of static vortices. In agreement with recent experiments [Phys. Rev. B 80,
165120 (2009); Phys. Rev. B 78, 075302 (2008)], we find that the critical current is proportional to the
sample area and is comparable in magnitude to observed values. This reflects the formation of a Bean
critical state as a result of current injection at the boundary. We predict a crossover to a critical current
proportional to the square-root of the area in smaller samples.We also predict a peak in the critical current
as the electron density varies at fixed layer separation.
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Grant Number
Science Foundation Ireland (SFI)
Author's Homepage:
http://people.tcd.ie/easthampDescription:
PUBLISHED
Author: EASTHAM, PAUL
Sponsor:
Science Foundation Ireland (SFI)Type of material:
Journal ArticleCollections
Series/Report no:
Physical Review Letters105
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Full text availableKeywords:
Condensed matter physics, quantum Hall bilayerSubject (TCD):
Nanoscience & MaterialsMetadata
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