Quantum magnetotransport properties of ultrathin topological insulator films

Muhammad Tahir, K. Sabeeh, Udo Schwingenschlögl

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We study the quantum magnetotransport in ultrathin topological insulator films in an external magnetic field considering hybridization between the upper and lower surfaces of the film. We investigate the two possible mechanisms for splitting of Landau levels, Zeeman and hybridization effects, and show that their interplay leads to minima in the collisional and Hall conductivities with a metal-to-insulator phase transition at the charge neutrality point. Hall plateaus arise at unusual multiples of e2/h . Evidence of a quantum phase transition for the zeroth and splitting of the higher Landau levels is found from the temperature and magnetic field dependences of the transport.
Original languageEnglish (US)
Pages (from-to)043720
JournalJournal of Applied Physics
Volume113
Issue number4
DOIs
StatePublished - Jan 30 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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