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Quantum transport in $ν=2/3$ spin-singlet quantum Hall edges

Ken-ichiro Imura·Naoto Nagaosa
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Abstract

Tunneling conductance $G(T)$ through a constricted point contact is studied for the $ν=2/3$ spin-singlet edges. Including spin-flip tunneling, Zeeman splitting and random magnetic impurities, we discuss the various crossovers of $G(T)$ as a function of the temperature $T$. The behavior of $G(T)$ is found to be quite different for spin-singlet and spin-polarized cases, and hence $G(T)$ is expected to serve as an experimental probe for the polarized-unpolarized transition at $ν=2/3$.

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Ken-ichiro Imura, Naoto Nagaosa. 1997-10-31. Quantum transport in $ν=2/3$ spin-singlet quantum Hall edges. https://doi.org/10.1103/physrevb.57.r6826

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