Effects of long-range Coulomb interaction on the quantum transport in fractional quantum Hall edges
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説明
We study the effects of long-range Coulomb interaction (LRCI) on the quantum transport in FQH edges with $��=1/(2k+1)$. We consider two models, i.e., the quasi-particle tunneling (QPT) model and the electron tunneling (ET) model at the point contact. The tunneling conductance $G(T)$ is obtained using the renormalization group treatment. In QPT model, it is found that LRCI further reduces $G(T)$ below a crossover temperature $��_w$. In ET model, on the other hand, there is a temeperature region where LRCI enhances $G(T)$, and nonmonotonic temperature dependence is possible.
4 pages, latex file. Published in Solid State Commun.103, 663 (1997). There is a typo in the effective action for the ET model in the earlier version. $\nu$ should be replaced by $1/\nu$
収録刊行物
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- Solid State Communications
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Solid State Communications 103 663-668, 1997-09-01
Elsevier BV