Reentrant topological phases in Mn-doped HgTe quantum wells

W. Beugeling; C. X. Liu; E. G. Novik; L. W. Molenkamp; C. Morais Smith

doi:10.1103/PhysRevB.85.195304

Reentrant topological phases in Mn-doped HgTe quantum wells

W. Beugeling, C. X. Liu, E. G. Novik, L. W. Molenkamp, C. Morais Smith

Physics

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18 Scopus citations

Abstract

Quantum wells of HgTe doped with Mn display the quantum anomalous Hall effect due to the magnetic moments of the Mn ions. In the presence of a magnetic field, these magnetic moments induce an effective nonlinear Zeeman effect, causing a nonmonotonic bending of the Landau levels. As a consequence, the quantized (spin) Hall conductivity exhibits a reentrant behavior as one increases the magnetic field. Here, we will discuss the appearance of different types of reentrant behavior as a function of Mn concentration, well thickness, and temperature, based on the qualitative form of the Landau-level spectrum in an effective four-band model.

Original language	English (US)
Article number	195304
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.85.195304
State	Published - May 4 2012

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All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Beugeling, W., Liu, C. X., Novik, E. G., Molenkamp, L. W., & Morais Smith, C. (2012). Reentrant topological phases in Mn-doped HgTe quantum wells. Physical Review B - Condensed Matter and Materials Physics, 85(19), [195304]. https://doi.org/10.1103/PhysRevB.85.195304

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AU - Morais Smith, C.

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Access to Document

10.1103/PhysRevB.85.195304