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Title: Magnetizing topological surface states of Bi 2 Se 3 with a CrI 3 monolayer

Abstract

To magnetize surfaces of topological insulators without damaging their topological feature is a crucial step for the realization of the quantum anomalous Hall effect (QAHE) and remains as a challenging task. Through density functional calculations, we found that adsorption of a semiconducting two-dimensional van der Waals (2D-vdW) ferromagnetic CrI3monolayer can create a sizable spin splitting at the Dirac point of the topological surface states of Bi2Se3films. Furthermore, general rules that connect different quantum and topological parameters are established through model analyses. This work provides a useful guideline for the realization of QAHE at high temperatures in heterostructures of 2D-vdW magnetic monolayers and topological insulators.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Univ. of California, Irvine, CA (United States)
  2. Univ. of California, Irvine, CA (United States); Incheon National University, Incheon (Korea)
Publication Date:
Research Org.:
Univ. of California, Irvine, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1609695
Grant/Contract Number:  
FG02-05ER46237
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 5; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Science & Technology - Other Topics

Citation Formats

Hou, Yusheng, Kim, Jeongwoo, and Wu, Ruqian. Magnetizing topological surface states of Bi 2 Se 3 with a CrI 3 monolayer. United States: N. p., 2019. Web. doi:10.1126/sciadv.aaw1874.
Hou, Yusheng, Kim, Jeongwoo, & Wu, Ruqian. Magnetizing topological surface states of Bi 2 Se 3 with a CrI 3 monolayer. United States. https://doi.org/10.1126/sciadv.aaw1874
Hou, Yusheng, Kim, Jeongwoo, and Wu, Ruqian. Fri . "Magnetizing topological surface states of Bi 2 Se 3 with a CrI 3 monolayer". United States. https://doi.org/10.1126/sciadv.aaw1874. https://www.osti.gov/servlets/purl/1609695.
@article{osti_1609695,
title = {Magnetizing topological surface states of Bi 2 Se 3 with a CrI 3 monolayer},
author = {Hou, Yusheng and Kim, Jeongwoo and Wu, Ruqian},
abstractNote = {To magnetize surfaces of topological insulators without damaging their topological feature is a crucial step for the realization of the quantum anomalous Hall effect (QAHE) and remains as a challenging task. Through density functional calculations, we found that adsorption of a semiconducting two-dimensional van der Waals (2D-vdW) ferromagnetic CrI3monolayer can create a sizable spin splitting at the Dirac point of the topological surface states of Bi2Se3films. Furthermore, general rules that connect different quantum and topological parameters are established through model analyses. This work provides a useful guideline for the realization of QAHE at high temperatures in heterostructures of 2D-vdW magnetic monolayers and topological insulators.},
doi = {10.1126/sciadv.aaw1874},
journal = {Science Advances},
number = 5,
volume = 5,
place = {United States},
year = {Fri May 31 00:00:00 EDT 2019},
month = {Fri May 31 00:00:00 EDT 2019}
}

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Works referencing / citing this record:

Van der Waals Heterostructures for High‐Performance Device Applications: Challenges and Opportunities
journal, October 2019


First-principles studies of spin-phonon coupling in monolayer C r 2 G e 2 T e 6
journal, December 2019


Exchange bias and quantum anomalous nomalous Hall effect in the MnBi 2 Te 4 /CrI 3 heterostructure
journal, March 2020