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Title: Colloquium: Quantum anomalous Hall effect

Journal Article · · Reviews of Modern Physics

The quantum Hall (QH) effect, quantized Hall resistance combined with zero longitudinal resistance, is the characteristic experimental fingerprint of Chern insulators—topologically nontrivial states of two-dimensional matter with broken time-reversal symmetry. In Chern insulators, nontrivial bulk band topology is expressed by chiral states that carry current along sample edges without dissipation. Here, the quantum anomalous Hall (QAH) effect refers to QH effects that occur in the absence of external magnetic fields due to spontaneously broken time-reversal symmetry. The QAH effect has now been realized in four different classes of two-dimensional materials: (i) thin films of magnetically (Cr- and/or V-) doped topological insulators in the (Bi,Sb)2T3 family, (ii) thin films of the intrinsic magnetic topological insulator MnBi2Te4, (iii) moiré materials formed from graphene, and (iv) moiré materials formed from transition-metal dichalcogenides. In this Colloquium, the physical mechanisms responsible for each class of QAH insulator are reviewed, with both differences and commonalities highlighted, and potential applications of the QAH effect are commented upon.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Army Research Office (ARO); NSF-MRSEC; US Air Force Office of Scientific Research (AFOSR); Gordon and Betty Moore Foundation’s EPiQS Initiative
Grant/Contract Number:
SC0022106; SC0023113; SC0019064; SC0019481; DMR-2011839; DMR-2011750; W911NF1810198; W911NF2210159; FA9550-21-1-0177; GBMF9063; DMR-1847811
OSTI ID:
1968228
Alternate ID(s):
OSTI ID: 1968946
Journal Information:
Reviews of Modern Physics, Vol. 95, Issue 1; ISSN 0034-6861
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices journal April 2012
Chromium-induced ferromagnetism with perpendicular anisotropy in topological crystalline insulator SnTe (111) thin films journal March 2018
Search for Majorana Fermions in Superconductors journal April 2013
Twisted bilayer graphene. V. Exact analytic many-body excitations in Coulomb Hamiltonians: Charge gap, Goldstone modes, and absence of Cooper pairing journal May 2021
Twisted bilayer graphene. IV. Exact insulator ground states and phase diagram journal May 2021
Realization of interlayer ferromagnetic interaction in MnS b 2 T e 4 toward the magnetic Weyl semimetal state journal November 2019
Twisted bilayer graphene. II. Stable symmetry anomaly journal May 2021
Observation of the Quantum Anomalous Hall Insulator to Anderson Insulator Quantum Phase Transition and its Scaling Behavior journal September 2016
Two applications of axion electrodynamics journal May 1987
Ordering mechanism and quantum anomalous Hall effect of magnetically doped topological insulators journal October 2017
Observation of Majorana fermions in ferromagnetic atomic chains on a superconductor journal October 2014
New classes of topological crystalline insulators having surface rotation anomaly journal December 2019
Precise Quantization of the Anomalous Hall Effect near Zero Magnetic Field journal May 2015
Twistable electronics with dynamically rotatable heterostructures journal August 2018
Quantum Anomalous Hall Effect from Inverted Charge Transfer Gap journal May 2022
Stanene on a SiC(0001) surface: a candidate for realizing quantum anomalous Hall effect journal January 2019
Quantum phase transition of chiral Majorana fermions in the presence of disorder journal March 2018
A Theory of Metallic Ferro- and Antiferromagnetism on Zener's Model journal July 1956
Continuous Mott transition in semiconductor moiré superlattices journal September 2021
Tunable moiré bands and strong correlations in small-twist-angle bilayer graphene journal March 2017
Ultrastructural Characterization of the Lower Motor System in a Mouse Model of Krabbe Disease journal December 2016
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells journal December 2006
Chemical-Potential-Dependent Gap Opening at the Dirac Surface States of Bi 2 Se 3 Induced by Aggregated Substitutional Cr Atoms journal February 2014
New directions in the pursuit of Majorana fermions in solid state systems journal June 2012
Anderson Localization from the Berry-Curvature Interchange in Quantum Anomalous Hall Systems journal July 2016
Converting a two-dimensional ferromagnetic insulator into a high-temperature quantum anomalous Hall system by means of an appropriate surface modification journal April 2019
Quantum anomalous Hall effect and related topological electronic states journal May 2015
Valley-Contrasting Physics in Graphene: Magnetic Moment and Topological Transport journal December 2007
Superexchange interaction and symmetry properties of electron orbitals journal July 1959
Topological phases and the quantum spin Hall effect in three dimensions journal May 2009
Diamagnetismus der Metalle journal September 1930
Realizing both giant magnetic anisotropy and quantum anomalous Hall effect in graphene with adsorbed Te-Co dimer journal December 2018
Spin Fluctuations in Quantized Transport of Magnetic Topological Insulators journal January 2021
Direct evidence of ferromagnetism in a quantum anomalous Hall system journal May 2018
Intrinsic magnetic topological insulators in van der Waals layered MnBi 2 Te 4 -family materials journal June 2019
Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers journal September 2021
Zero-Field Dissipationless Chiral Edge Transport and the Nature of Dissipation in the Quantum Anomalous Hall State journal July 2015
Voltage-Controlled Magnetic Reversal in Orbital Chern Insulators journal November 2020
Topology-Driven Magnetic Quantum Phase Transition in Topological Insulators journal March 2013
Abundant topological states in silicene with transition metal adatoms journal October 2013
Landau-level subband structure of electrons on a square lattice journal December 1983
Current scaling of the topological quantum phase transition between a quantum anomalous Hall insulator and a trivial insulator journal July 2020
Anomalous Zero-Bias Conductance Peak in a Nb–InSb Nanowire–Nb Hybrid Device journal February 2012
Any axion insulator must be a bulk three-dimensional topological insulator journal June 2021
Thickness Dependence of the Quantum Anomalous Hall Effect in Magnetic Topological Insulator Films journal May 2016
Colloquium: Topological insulators journal November 2010
Microscopic theory of quantum anomalous Hall effect in graphene journal March 2012
Quantum anomalous Hall effect in intrinsic magnetic topological insulator MnBi 2 Te 4 journal January 2020
Intrinsic Topological Insulator Bi2Te3 Thin Films on Si and Their Thickness Limit journal July 2010
Imaging Dirac-mass disorder from magnetic dopant atoms in the ferromagnetic topological insulator Cr x (Bi 0.1 Sb 0.9 ) 2-x Te 3 journal January 2015
Topological magnetoelectric effects in thin films of topological insulators journal August 2015
Tuning superconductivity in twisted bilayer graphene journal January 2019
Natural van der Waals heterostructural single crystals with both magnetic and topological properties journal November 2019
Unconventional Topological Phase Transition in Two-Dimensional Systems with Space-Time Inversion Symmetry journal April 2017
High-current effects in magnetotransport of two-dimensional electrons in GaAs/AlxGa1xAs heterostructures journal August 1989
Quantum anomalous Hall effect in time-reversal-symmetry breaking topological insulators journal March 2016
Molecular beam epitaxy of antiferromagnetic (MnBi 2 Te 4 )(Bi 2 Te 3 ) thin films on BaF 2 (111) journal October 2020
Giant gap quantum spin Hall effect and valley-polarized quantum anomalous Hall effect in cyanided bismuth bilayers journal July 2016
Quantum anomalous Hall effect in ferromagnetic transition metal halides journal January 2017
Terahertz spectroscopy on Faraday and Kerr rotations in a quantum anomalous Hall state journal July 2016
Substrate-induced band gap in graphene on hexagonal boron nitride: Ab initio density functional calculations journal August 2007
Multiple Magnetic Topological Phases in Bulk van der Waals Crystal MnSb 4 Te 7 journal June 2021
Nature of the Correlated Insulator States in Twisted Bilayer Graphene journal March 2020

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