Journal
PHYSICAL REVIEW B
Volume 85, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.195304
Keywords
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Funding
- Netherlands Organisation for Scientific Research (NWO)
- German Research Foundation DFG [SPP 1285, AS327/2]
- Alexander von Humboldt Foundation
- EU ERC-AG
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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.
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