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Mandatory Fields
Levy, E. and Tsukernik, A. and Karpovski, M. and Palevski, A. and Dwir, B. and Pelucchi, E. and Rudra, A. and Kapon, E. and Oreg, Y.
Physical Review Letters
Luttinger-liquid behavior in weakly disordered quantum wires
Optional Fields
We have measured the temperature dependence of the conductance in long V-groove quantum wires fabricated in GaAs/AlGaAs heterostructures. Our data are consistent with recent theories developed within the framework of the Luttinger-liquid model, in the limit of weakly disordered wires. We show that, for the relatively low level of disorder in our quantum wires, the value of the interaction parameter g congruent to 0.66, which is the expected value for GaAs. However, samples with a higher level of disorder show conductance with stronger temperature dependence, which does not allow their treatment in the framework of perturbation theory. Fitting such data with perturbation-theory models leads inevitably to wrong (lower) values of g.
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