Skyrmions in the Moore-Read State at ν=52

Arkadiusz Wójs, Gunnar Möller, Steven H. Simon, and Nigel R. Cooper
Phys. Rev. Lett. 104, 086801 – Published 23 February 2010

Abstract

We study charged excitations of the non-Abelian Moore-Read liquid at a filling factor ν=52, allowing for spin depolarization. Using a combination of numerical studies, and taking account of nonzero well widths, we find that at a sufficiently low Zeeman energy it is energetically favorable 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 ν=52 ground state in realistic experimental situations. We comment on the consequences for the activated transport.

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  • Received 21 October 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.086801

©2010 American Physical Society

Authors & Affiliations

Arkadiusz Wójs1,2, Gunnar Möller1, Steven H. Simon3, and Nigel R. Cooper1

  • 1TCM Group, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom
  • 2Institute of Physics, Wroclaw University of Technology, 50-370 Wroclaw, Poland
  • 3Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3NP, United Kingdom

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Issue

Vol. 104, Iss. 8 — 26 February 2010

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