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Proximity-Induced Magnetic Order in a Transferred Topological Insulator Thin Film on a Magnetic Insulator
- Source :
- ACS Nano. 12:5042-5050
- Publication Year :
- 2018
- Publisher :
- American Chemical Society (ACS), 2018.
-
Abstract
- Breaking the time reversal symmetry (TRS) in a topological insulator (TI) by introducing a magnetic order gives rise to exotic quantum phenomena. One of the promising routes to inducing a magnetic order in a TI is utilizing magnetic proximity effect between a TI and a strong magnetic insulator (MI). In this article, we demonstrate a TI/MI heterostructure prepared through transferring a molecular beam epitaxy (MBE)-grown Bi2Se3 film onto a yttrium iron garnet (YIG) substrate via wet transfer. The transferred Bi2Se3 exhibits excellent quality over a large scale. Moreover, through wet transfer we are able to engineer the interface and perform a comparative study to probe the proximity coupling between Bi2Se3 and YIG under different interface conditions. A detailed investigation of both the anomalous Hall effect and quantum corrections to the conductivity in magnetotransport measurements reveals an induced magnetic order as well as TRS breaking in the transferred Bi2Se3 film on YIG. In contrast, a thin layer ...
- Subjects :
- Materials science
Condensed matter physics
General Engineering
Yttrium iron garnet
General Physics and Astronomy
Insulator (electricity)
Heterojunction
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Condensed Matter::Materials Science
chemistry.chemical_compound
T-symmetry
chemistry
Hall effect
Topological insulator
0103 physical sciences
General Materials Science
Thin film
010306 general physics
0210 nano-technology
Molecular beam epitaxy
Subjects
Details
- ISSN :
- 1936086X and 19360851
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- ACS Nano
- Accession number :
- edsair.doi.dedup.....358fe919ac3d0b927e34c6319f9a6734