Axion insulator state in ferromagnetically ordered CrI3/Bi2Se3/MnBi2Se4 heterostructures
Journal Article
·
· Physical Review B
- Univ. of California, Irvine, CA (United States); OSTI
- Incheon National University (Korea)
- Univ. of California, Irvine, CA (United States)
Ferromagnetic (FM) axion insulators may greatly simplify experimental explorations of the topological magnetoelectric effect, as the FM ordering can be stable in a broad range of magnetic field. Through density functional theory calculations and four-band model studies, we find that two-dimensional van der Waals FM CrI3 and MnBi2Se4 overlayers induce opposite-sign exchange fields in the topological surface states of Bi2Se3 film when they are ferromagnetically ordered. As a consequence, the CrI3/Bi2Se3/MnBi2Se4 heterostructure is a robust FM axion insulator, according to surface-resolved Berry curvature calculations. Our work opens up opportunities for the design of materials with the topological magnetoelectric effect.
- Research Organization:
- Univ. of California, Irvine, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- FG02-05ER46237
- OSTI ID:
- 1800331
- Alternate ID(s):
- OSTI ID: 1602375
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 12 Vol. 101; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Axion Insulator State in a Ferromagnet/Topological Insulator/Antiferromagnet Heterostructure
Magnetizing topological surface states of Bi 2 Se 3 with a CrI 3 monolayer
Journal Article
·
Wed Mar 13 20:00:00 EDT 2019
· Nano Letters
·
OSTI ID:1529921
Magnetizing topological surface states of Bi 2 Se 3 with a CrI 3 monolayer
Journal Article
·
Thu May 30 20:00:00 EDT 2019
· Science Advances
·
OSTI ID:1609695