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research article
Experimental evidence for Luttinger liquid behavior in sufficiently long GaAs V-groove quantum wires
2012
We have measured the temperature dependence of the conductance of long V-groove quantum wires fabricated using GaAs/AlGaAs heterostructures, in a wide temperature range (200 mK < T < 4.2 K). We find that for our quantum wires the Fermi velocity can be as low as nu(F) congruent to 5 x 10(4) m/s, corresponding to an interaction parameter value of g congruent to 0.56. This value suggests that our data are consistent with theories developed within the framework of the Luttinger liquid model in the presence of a single strong barrier (weak link).
Type
research article
Web of Science ID
WOS:000299290100005
Publication date
2012
Published in
Volume
85
Issue
4
Article Number
045315
Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
February 9, 2012
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