Journal
APPLIED PHYSICS LETTERS
Volume 108, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4953768
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Funding
- Samsung Electronics Corporation
- NSF/MRSEC through Cornell Center for Materials Research [DMR-1120296]
- Office of Naval Research
- NSF through Cornell Nanofabrication Facility/National Nanofabrication Infrastructure Network [ECCS-1542081]
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We report that the spin Hall torque generated by Pt can be enhanced substantially by alloying with Al or Hf. We observe damping-like spin torque efficiency per unit applied current density as high as xi(j)(DL) = 0.23+/-0.02, nearly twice the maximum value reported for pure Pt. To achieve this maximum efficiency, a very thin (0.5 nm) Pt spacer layer is inserted between the alloy and the ferromagnet being manipulated, to avoid a degraded spin transparency at the alloy/ferromagnet interface. Published by AIP Publishing.
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