Quantum magnetotransport for the surface states of three-dimensional topological insulators in the presence of a Zeeman field

Handle URI:
http://hdl.handle.net/10754/562752
Title:
Quantum magnetotransport for the surface states of three-dimensional topological insulators in the presence of a Zeeman field
Authors:
Tahir, Muhammad; Schwingenschlögl, Udo ( 0000-0003-4179-7231 )
Abstract:
We show that the surface states of magnetic topological insulators realize an activated behavior and Shubnikov de Haas oscillations. Applying an external magnetic field perpendicular to the surface of the topological insulator in the presence of Zeeman interaction, we investigate the opening of a gap at the Dirac point, making the surface Dirac fermions massive, and the effects on the transport properties. Analytical expressions are derived for the collisional conductivity for elastic impurity scattering in the first Born approximation. We also calculate the Hall conductivity using the Kubo formalism. Evidence for a transition from gapless to gapped surface states at n = 0 and activated transport is found from the temperature and magnetic-field dependence of the collisional and Hall conductivities. © Copyright EPLA, 2013.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)
Publisher:
European Physical Society
Journal:
EPL
Issue Date:
1-May-2013
DOI:
10.1209/0295-5075/102/37001
Type:
Article
ISSN:
02955075
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)

Full metadata record

DC FieldValue Language
dc.contributor.authorTahir, Muhammaden
dc.contributor.authorSchwingenschlögl, Udoen
dc.date.accessioned2015-08-03T11:04:23Zen
dc.date.available2015-08-03T11:04:23Zen
dc.date.issued2013-05-01en
dc.identifier.issn02955075en
dc.identifier.doi10.1209/0295-5075/102/37001en
dc.identifier.urihttp://hdl.handle.net/10754/562752en
dc.description.abstractWe show that the surface states of magnetic topological insulators realize an activated behavior and Shubnikov de Haas oscillations. Applying an external magnetic field perpendicular to the surface of the topological insulator in the presence of Zeeman interaction, we investigate the opening of a gap at the Dirac point, making the surface Dirac fermions massive, and the effects on the transport properties. Analytical expressions are derived for the collisional conductivity for elastic impurity scattering in the first Born approximation. We also calculate the Hall conductivity using the Kubo formalism. Evidence for a transition from gapless to gapped surface states at n = 0 and activated transport is found from the temperature and magnetic-field dependence of the collisional and Hall conductivities. © Copyright EPLA, 2013.en
dc.publisherEuropean Physical Societyen
dc.titleQuantum magnetotransport for the surface states of three-dimensional topological insulators in the presence of a Zeeman fielden
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentComputational Physics and Materials Science (CPMS)en
dc.identifier.journalEPLen
kaust.authorTahir, Muhammaden
kaust.authorSchwingenschlögl, Udoen
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