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Effects of a tilted magnetic field in a Dirac double layer
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.ORCID iD: 0000-0002-6166-181X
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 91, no 8, 085418Article in journal (Refereed) Published
Abstract [en]

We calculate the energy spectrum of a Dirac double layer, where each layer has the Dirac electronic dispersion, in the presence of a tilted magnetic field and small interlayer tunneling. We show that the energy splitting between the Landau levels has an oscillatory dependence on the in-plane magnetic field and vanishes at a series of special tilt angles of the magnetic field. Using a semiclassical analysis, we show that these special tilt angles are determined by the Berry phase of the Dirac Hamiltonian. The interlayer tunneling conductance also exhibits an oscillatory dependence on the magnetic field tilt angle, known as the angular magnetoresistance oscillations (AMRO). Our results are applicable to graphene double layers and thin films of topological insulators.

Place, publisher, year, edition, pages
2015. Vol. 91, no 8, 085418
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-162951DOI: 10.1103/PhysRevB.91.085418ISI: 000349786400007Scopus ID: 2-s2.0-84923666891OAI: oai:DiVA.org:kth-162951DiVA: diva2:800188
Funder
EU, European Research Council
Note

QC 20150402

Available from: 2015-04-02 Created: 2015-03-26 Last updated: 2017-12-04Bibliographically approved

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Abergel, David S. L.

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Pershoguba, Sergey S.Abergel, David S. L.Balatsky, Alexander V.
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