Anisotropic Transport of Quantum Hall Meron-Pair Excitations

Details Anisotropic Transport of Quantum Hall Meron-Pair Excitations Anisotropic Transport of Quantum Hall Meron-Pair Excitations

1997-01-30

arxiv.org/abs/cond-mat/9701224v1

Physics

Condensed Matter

4 pages, RevTex, 3 postscript figures

Scientific paper

10.1103/PhysRevB.57.1378

Double-layer quantum Hall systems at total filling factor $\nu_T=1$ can exhibit a commensurate-incommensurate phase transition driven by a magnetic field $B_{\parallel}$ oriented parallel to the layers. Within the commensurate phase, the lowest charge excitations are believed to be linearly-confined Meron pairs, which are energetically favored to align with $B_{\parallel}$. In order to investigate this interesting object, we propose a gated double-layer Hall bar experiment in which $B_{\parallel}$ can be rotated with respect to the direction of a constriction. We demonstrate the strong angle-dependent transport due to the anisotropic nature of linearly-confined Meron pairs and discuss how it would be manifested in experiment.

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