Journal
NANOSCALE
Volume 12, Issue 45, Pages 22958-22962Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0nr06590k
Keywords
-
Categories
Funding
- National Science Foundation [DMR-1610146, EFMA1641989, ECCS-1708885]
- Army Research Office [W911NF-16-1-0472]
- Defense Threat Reduction Agency [HDTRA1-16-1-0025]
Ask authors/readers for more resources
The momentum and spin of charge carriers in the topological insulators are constrained to be perpendicular to each other due to the strong spin-orbit coupling. We have investigated this unique spin-momentum locking property in Sb2Te3 topological insulator nanowires by injecting spin-polarized electrons through magnetic tunnel junction electrodes. Non-local voltage measurements exhibit an asymmetry with respect to the magnetic field applied perpendicular to the nanowire channel, which is remarkably different from that of a non-local measurement in a channel that lacks spin-momentum locking. In stark contrast to conventional non-local spin valves, simultaneous reversal of magnetic moments of all magnetic contacts to the Sb2Te3 nanowire alters the non-local voltage. This unusual asymmetry is a clear signature of the spin-momentum locking in the Sb2Te3 nanowire surface states.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available