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Title: Current-driven spin orbit field in LaAlO{sub 3}/SrTiO{sub 3} heterostructures

We demonstrate a current tunable Rashba spin orbit interaction in LaAlO{sub 3}/SrTiO{sub 3} (LAO/STO) quasi two dimensional electron gas system. Anisotropic magnetoresistance measurements are employed to detect and understand the current-induced Rashba field. The effective Rashba field scales with the current and a value of 2.35 T is observed for a dc-current of 200 μA. The results suggest that LAO/STO heterostructures can be considered for spin orbit torque based magnetization switching.
Authors:
;  [1] ; ;  [1] ;  [2] ; ;  [3] ;  [2] ;  [1] ;  [2] ;  [2] ;  [2]
  1. Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore)
  2. (Singapore)
  3. NUSNNI-Nanocore, National University of Singapore, Singapore 117411 (Singapore)
Publication Date:
OSTI Identifier:
22350959
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINATES; ANISOTROPY; CURRENTS; ELECTRON GAS; LANTHANUM COMPOUNDS; L-S COUPLING; MAGNETIZATION; MAGNETORESISTANCE; ORBITS; SPIN; STRONTIUM TITANATES; TORQUE; TWO-DIMENSIONAL CALCULATIONS