Charge 2e skyrmions in bilayer graphene

D. A. Abanin, S. A. Parameswaran, S. L. Sondhi

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

Quantum Hall states that result from interaction induced lifting of the eightfold degeneracy of the zeroth Landau level in bilayer graphene are considered. We show that at even filling factors electric charge is injected into the system in the form of charge 2e Skyrmions. This is a rare example of binding of charges in a system with purely repulsive interactions. We calculate the Skyrmion energy and size as a function of the effective Zeeman interaction and discuss the signatures of the charge 2e Skyrmions in the scanning probe experiments.

Original languageEnglish (US)
Article number076802
JournalPhysical review letters
Volume103
Issue number7
DOIs
StatePublished - Aug 12 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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