Effects of a tilted magnetic field in a Dirac double layer
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
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
IdentifiersURN: urn:nbn:se:su:diva-115916DOI: 10.1103/PhysRevB.91.085418ISI: 000349786400007OAI: oai:DiVA.org:su-115916DiVA: diva2:806096