skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Quantum anomalous Hall insulator phases in Fe-doped GaBi honeycomb

Journal Article · · Chinese Journal of Physics
 [1];  [1];  [2];  [1];  [1];  [3];  [4];  [5]
  1. National Sun Yat-Sen Univ., Kaohsiung (Taiwan). Dept. of Physics
  2. Univ. of the Philippines Baguio, Baguio City (Philippines). Dept. of Physical Sciences
  3. Academia Sinica, Taipei (Taiwan). Inst. of Physics
  4. Northeastern Univ., Boston, MA (United States). Dept. of Physics
  5. National Sun Yat-Sen Univ., Kaohsiung (Taiwan). Dept. of Physics; National Tsing Hua Univ., Hsinchu (Taiwan). Dept. of Physics; National Center for Theoretical Sciences, Hsinchu (Taiwan). Physics Division

We discuss electronic and magnetic properties of the Fe-doped GaBi honeycomb using first principles calculations. Our analysis shows that the pristine GaBi honeycomb transitions from being a two-dimensional quantum spin Hall (QSH) insulator to a quantum anomalous Hall (QAH) insulator when it is doped with one Fe atom in a 4 × 4 GaBi honeycomb. Additionally, the QAH phase in Fe-doped GaBi is found to be robust in that it maintains its Chern number (C = 1) under fairly large strains (~ 4%) and supports a gap as large as 112 meV at 2.21% strain. The QAH phase is also retained when the Fe-doped GaBi is placed on a CdTe substrate, suggesting that Fe-doped GaBi films could be useful for spintronics applications.

Research Organization:
Northeastern Univ., Boston, MA (United States); Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
Ministry of Science and Technology of Taiwan (MOST); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-07ER46352; AC02-05CH11231; MOST-107- 2628-M-110-001-MY3; MOST 109-2112-M-001-014-MY
OSTI ID:
1849738
Alternate ID(s):
OSTI ID: 2325069
Journal Information:
Chinese Journal of Physics, Vol. 67, Issue C; ISSN 0577-9073
Publisher:
Physical Society of Republic of China in TaiwanCopyright Statement
Country of Publication:
United States
Language:
English

References (54)

Generalized Gradient Approximation Made Simple journal October 1996
Growth of a predicted two-dimensional topological insulator based on InBi-Si(111)- 7 × 7 journal September 2018
Topological insulators and superconductors journal October 2011
Magnetism and electronic structure of hcp Gd and the Gd(0001) surface journal June 2002
Magnetic interactions in a proposed diluted magnetic semiconductor (Ba 1− x K x )(Zn 1− y Mn y ) 2 P 2 journal June 2018
Structural and magnetic properties of (Ga,Mn)N from first principles journal March 2007
The nontrivial electronic structure of Bi/Sb honeycombs on SiC(0001) journal February 2015
Quantum anomalous Hall insulator phase in asymmetrically functionalized germanene journal October 2017
wannier90: A tool for obtaining maximally-localised Wannier functions journal May 2008
Predicting two-dimensional topological phases in Janus materials by substitutional doping in transition metal dichalcogenide monolayers journal September 2019
Colloquium : Topological band theory journal June 2016
Quantum anomalous Hall and quantum spin-Hall phases in flattened Bi and Sb bilayers journal February 2015
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Prediction of Quantum Anomalous Hall Insulator in half-fluorinated GaBi Honeycomb journal August 2016
Thin Films of Magnetically Doped Topological Insulator with Carrier-Independent Long-Range Ferromagnetic Order journal January 2013
Electronic structure of substitutionally Mn-doped graphene journal June 2010
Prediction of Quantum Anomalous Hall Effect in MBi and MSb (M:Ti, Zr, and Hf) Honeycombs journal February 2018
Quantum anomalous Hall effect and related topological electronic states journal May 2015
Ab initiomolecular dynamics for liquid metals journal January 1993
Giant Topological Nontrivial Band Gaps in Chloridized Gallium Bismuthide journal January 2015
Quantum spin Hall insulators and quantum valley Hall insulators of BiX/SbX (X=H, F, Cl and Br) monolayers with a record bulk band gap journal December 2014
Magnetic interactions of Cr Cr and Co Co impurity pairs in ZnO within a band-gap corrected density functional approach journal June 2008
Anomalous Hall effect journal May 2010
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator journal March 2015
Prediction of a quantum anomalous Hall state in Co-decorated silicene journal January 2014
Prediction of two-dimensional organic topological insulator in metal-DCB lattices journal December 2018
Quantum anomalous Hall effect in graphene from Rashba and exchange effects journal October 2010
Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator journal March 2013
Tuning the Structural, Electronic, and Magnetic Properties of Germanene by the Adsorption of 3d Transition Metal Atoms journal October 2014
Special points for Brillouin-zone integrations journal June 1976
Prediction of Large-Gap Two-Dimensional Topological Insulators Consisting of Bilayers of Group III Elements with Bi journal April 2014
Colloquium: Topological insulators journal November 2010
Valley-polarized quantum anomalous Hall phases and tunable topological phase transitions in half-hydrogenated Bi honeycomb monolayers journal April 2015
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Inhomogeneous Electron Gas journal November 1964
Computing topological invariants without inversion symmetry journal June 2011
Quantum anomalous Hall effect journal December 2013
Magnetic and topological properties in hydrogenated transition metal dichalcogenide monolayers journal August 2020
Large-Gap Quantum Spin Hall Insulators in Tin Films journal September 2013
Model for a Quantum Hall Effect without Landau Levels: Condensed-Matter Realization of the "Parity Anomaly" journal October 1988
2D Tl–Pb compounds on Ge(1 1 1) surface: atomic arrangement and electronic band structure journal November 2016
Ground State of the Electron Gas by a Stochastic Method journal August 1980
Magnetism of substitutional Co impurities in graphene: Realization of single π vacancies journal March 2010
WannierTools: An open-source software package for novel topological materials journal March 2018
Magnetism of Phthalocyanine-Based Organometallic Single Porous Sheet journal September 2011
Low-energy effective Hamiltonian for giant-gap quantum spin Hall insulators in honeycomb X -hydride/halide ( X = N Bi ) monolayers journal August 2014
Robust Large Gap Two-Dimensional Topological Insulators in Hydrogenated III–V Buckled Honeycombs journal September 2015
Predicted Growth of Two-Dimensional Topological Insulator Thin Films of III-V Compounds on Si(111) Substrate journal November 2015
Hydrogenated ultra-thin tin films predicted as two-dimensional topological insulators journal November 2014
Chemically induced large-gap quantum anomalous Hall insulator states in III-Bi honeycombs journal September 2017
Bismuth–indium two-dimensional compounds on Si(111) surface journal September 2016
Highly convergent schemes for the calculation of bulk and surface Green functions journal April 1985
Prediction of Near-Room-Temperature Quantum Anomalous Hall Effect on Honeycomb Materials journal December 2014