TY - JOUR
T1 - Quantum magnetotransport for the surface states of three-dimensional topological insulators in the presence of a Zeeman field
AU - Tahir, Muhammad
AU - Schwingenschlögl, Udo
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2013/5/10
Y1 - 2013/5/10
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/562752
UR - https://iopscience.iop.org/article/10.1209/0295-5075/102/37001
UR - http://www.scopus.com/inward/record.url?scp=84878404898&partnerID=8YFLogxK
U2 - 10.1209/0295-5075/102/37001
DO - 10.1209/0295-5075/102/37001
M3 - Article
SN - 0295-5075
VL - 102
SP - 37001
JO - EPL
JF - EPL
IS - 3
ER -