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 |
|---|---|
| Article number | 195304 |
| Pages (from-to) | 1-8 |
| Number of pages | 8 |
| Journal | Physical review. B, Condensed matter and materials physics |
| Volume | 85 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2012 |