Anomalous chiral Luttinger liquid behavior of diluted fractionally charged quasiparticles

被引：21

作者：

Chung, YC ^{[1
]}

Heiblum, M ^{[1
]}

Oreg, Y ^{[1
]}

Umansky, V ^{[1
]}

Mahalu, D ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Condensed Matter Phys, Braun Ctr Submicron Res, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.67.201104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fractionally charged quasiparticles in edge states, are expected to condense to a chiral Luttinger liquid (CLL). We studied their condensation by measuring the conductance and shot noise due to an artificial backscatterer embedded in their path. At sufficiently low-temperatures backscattering events were found to be strongly correlated, producing a highly nonlinear current-voltage characteristic and a nonclassical shot noise-both are expected in a CLL. When, however, the impinging beam of quasiparticles was made dilute, either artificially via an additional weak backscatterer or by increasing the temperature, the resultant outgoing noise was classical, indicating the scattering of independent quasiparticles. Here, we study in some detail this surprising crossover from correlated particle behavior to an independent behavior, as a function of beam dilution and temperature.

引用

页数：4

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