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arXiv · 0910.4176

Skyrmions in the Moore-Read state at nu=5/2

Arkadiusz Wojs·Gunnar Moller·Steven H. Simon·Nigel R. Cooper
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Abstract

We study charged excitations of the non-abelian Moore-Read liquid at filling factor nu=5/2, allowing for spin depolarization. Using a combination of numerical studies, and taking account of non-zero well widths, we find that at sufficiently low Zeeman energy it is energetically favourable for charge e/4 quasiholes to bind into "skyrmions" of charge e/2. We show that skyrmion formation is further promoted by disorder, and argue that this can lead to a depolarized nu=5/2 ground state in realistic experimental situations. We comment on the consequences for the activated transport.

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Arkadiusz Wojs, Gunnar Moller, Steven H. Simon, Nigel R. Cooper. 2009-10-21. Skyrmions in the Moore-Read state at nu=5/2. https://doi.org/10.1103/physrevlett.104.086801

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