Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session X22: Spin-Orbit Effects at Metal/Insulator Interfaces
8:00 AM–11:00 AM,
Friday, March 9, 2018
LACC
Room: 402A
Sponsoring
Units:
GMAG DMP FIAP
Chair: Can Onur Avci, Massachusetts Institute of Technology-MIT
Abstract ID: BAPS.2018.MAR.X22.2
Abstract: X22.00002 : Enhancement of spin-wave propagation using topological insulators
8:12 AM–8:24 AM
Presenter:
Aryan Navabi
(Univ of California - Los Angeles)
Authors:
Aryan Navabi
(Univ of California - Los Angeles)
Yuxiang Liu
(Univ of California - Los Angeles)
Pramey Upadhyaya
(Univ of California - Los Angeles)
Farbod Ebrahimi
(Inston Inc.)
Guoqiang Yu
(Univ of California - Los Angeles)
Koichi Murata
(Univ of California - Los Angeles)
Lei Pan
(Univ of California - Los Angeles)
Pedram Khalili Amiri
(Northwestern University)
Yaroslav Tserkovnyak
(University of California - Los Angeles)
Kang Wang
(Univ of California - Los Angeles)
Here, we present the first study of spin-wave amplification in LPE YIG/TI. We used a 15 nm thick Bi2Se3 as the TI layer, which was grown by molecular beam epitaxy on a 3 μm thick YIG layer. We measured the change in spin-wave amplitude as the current in the TI layer was varied. We used the critical current density as our figure of merit which is the current density required to entirely suppress spin-wave damping. We show that this current is three times smaller than that in YIG/Pt which means TI is a more efficient material for spin-wave amplification.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.X22.2
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