Reentrant topological phases in Mn-doped HgTe quantum wells

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

Research output: Contribution to journalArticle

17 Citations (Scopus)

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 languageEnglish (US)
Article number195304
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number19
DOIs
StatePublished - May 4 2012

Fingerprint

Magnetic moments
Semiconductor quantum wells
magnetic moments
quantum wells
Magnetic fields
Quantum Hall effect
Zeeman effect
magnetic fields
Hall effect
Ions
conductivity
ions
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Beugeling, W. ; Liu, Chaoxing ; Novik, E. G. ; Molenkamp, L. W. ; Morais Smith, C. / Reentrant topological phases in Mn-doped HgTe quantum wells. In: Physical Review B - Condensed Matter and Materials Physics. 2012 ; Vol. 85, No. 19.
@article{1623056f17a94c16940e9de1bc925149,
title = "Reentrant topological phases in Mn-doped HgTe quantum wells",
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.",
author = "W. Beugeling and Chaoxing Liu and Novik, {E. G.} and Molenkamp, {L. W.} and {Morais Smith}, C.",
year = "2012",
month = "5",
day = "4",
doi = "10.1103/PhysRevB.85.195304",
language = "English (US)",
volume = "85",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "19",

}

Reentrant topological phases in Mn-doped HgTe quantum wells. / Beugeling, W.; Liu, Chaoxing; Novik, E. G.; Molenkamp, L. W.; Morais Smith, C.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 85, No. 19, 195304, 04.05.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Reentrant topological phases in Mn-doped HgTe quantum wells

AU - Beugeling, W.

AU - Liu, Chaoxing

AU - Novik, E. G.

AU - Molenkamp, L. W.

AU - Morais Smith, C.

PY - 2012/5/4

Y1 - 2012/5/4

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84861175236&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861175236&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.85.195304

DO - 10.1103/PhysRevB.85.195304

M3 - Article

VL - 85

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 19

M1 - 195304

ER -