Quantum valley Hall effect in proximity-induced superconducting graphene: An experimental window for deconfined quantum criticality

Pouyan Ghaemi, Shinsei Ryu, Dung Hai Lee

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We show that when superconductivity is induced in graphene through proximity effect, a superconducting vortex is dressed with an interesting pattern of textured order parameters. Furthermore, passing a supercurrent in a superconducting graphene sample induces accumulation of valley pseudospin quantum number at edges: the "quantum valley Hall effect" will be observable in superconducting graphene. These effects reveal a quantum duality between different order parameters that is at heart of the Wess-Zumino-Witten term.

Original languageEnglish (US)
Article number081403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number8
DOIs
StatePublished - Feb 4 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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