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Spin-orbit torques acting upon a perpendicularly-magnetized Py layer
Tian-Yue Chen, Yongxi Ou, Tsung-Yu Tsai +2
We show that Py, a commonly-used soft ferromagnetic material with weak anisotropy, can become perpendicularly-magnetized while depositing on Ta buffer layer with Hf or Zr insertion…
Exceptionally high, strongly temperature dependent, spin Hall conductivity of SrRuO3
Yongxi Ou, Zhe Wang, Celesta S. Chang +7
Spin-orbit torques (SOT) in thin film heterostructures originate from strong spin-orbit interactions (SOI) that, in the bulk, generate a spin current as the result of extrinsic spi…
Irrelevance of magnetic proximity effect to spin-orbit torques in heavy metal/ferromagnet bilayers
L. J. Zhu, D. C. Ralph, R. A. Buhrman
The magnetic proximity effect (MPE) is a well-established magnetic phenomenon that occurs at certain heavy metal (HM)/ferromagnet (FM) interfaces. However, there is still an active…
Highly efficient spin current generation by the spin Hall effect in AuPt
Lijun Zhu, Daniel. C. Ralph, Robert A. Buhrman
We report very efficient spin current generation by the spin Hall effect in the alloy Au0.25Pt0.75, which, as determined by two different direct spin-orbit torque measurements, exh…
Strong enhancement of the spin Hall effect by spin fluctuations near the Curie point of FexPt1-x alloys
Yongxi Ou, D. C. Ralph, R. A. Buhrman
Robust spin Hall effects (SHE) have recently been observed in non-magnetic heavy metal systems with strong spin-orbit interactions. These SHE are either attributed to an intrinsic…
Efficient Switching of 3-Terminal Magnetic Tunnel Junctions by the Giant Spin Hall Effect of Alloy
Minh-Hai Nguyen, Shengjie Shi, Graham E. Rowlands +4
Recent research has indicated that introducing impurities that increase the resistivity of Pt can enhance the efficiency of the spin Hall torque it generates. Here we directly demo…