Antiferromagnetic order in the layered magnetic topological insulator MnBi2Se4 probed by resonant soft x-ray scattering
Journal Article
·
· Physical Review. B
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States); Sun Yat-Sen Univ., Guangzhou (China)
- Univ. of California, San Diego, CA (United States)
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
- University of California, Berkeley, CA (United States)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States); Yale Univ., New Haven, CT (United States)
- Department of Physics, University of California, San Diego, California 92093, USA
- Helmholtz-Zentrum Berlin für Materialen und Energie, BESSY II, D-12489 Berlin, Germany
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States)
The quasi-two-dimensional magnetic topological insulator MnBi2Se4, stabilized via nonequilibrium molecular beam epitaxy, is investigated by resonant soft x-ray scattering. Kiessig fringes are observed, confirming a high sample quality and a thin film thickness of 10 septuple layers (∼13 nm). An antiferromagnetic Bragg peak is observed at the structurally forbidden reflection, whose magnetic nature is validated by studying its temperature, energy, and polarization dependence. Through a detailed analysis, an A-type antiferromagetic order with in-plane moments is implied. This alternative spin structure in MnBi2Se4, in contrast to the Ising antiferromagnetic states in other magnetic topological insulators, might be relevant for hosting new topological states.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES), Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC02-05CH11231; SC0016379
- OSTI ID:
- 2406223
- Alternate ID(s):
- OSTI ID: 2356927
- Journal Information:
- Physical Review. B, Journal Name: Physical Review. B Journal Issue: 18 Vol. 109; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:1807756