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

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

1997-10-31

arxiv.org/abs/cond-mat/9710342v1

Phys. Rev. B57, R6826 (1998).

Physics

Condensed Matter

5 pages (REVTeX)

Scientific paper

10.1103/PhysRevB.57.R6826

Tunneling conductance $G(T)$ through a constricted point contact is studied for the $\nu=2/3$ 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 $\nu=2/3$.

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