Exchange biased spin polarizer with an embedded nano-oxide layer for a substantially lower switching current density
- Authors
- Nguyen, Hoang Yen Thi; Yi, Hyunjung; Joo, Sung-Jung; Shin, Kyung-Ho; Lee, Kyung-Jin; Dieny, Bernard
- Issue Date
- 2006-08-28
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.89, no.9
- Abstract
- The authors demonstrate that the spin polarizer in the form of an exchange biased ferromagnetic lead with an embedded nano-oxide layer can greatly enhance the spin transfer torque for the current induced magnetization switching. By applying it in spin valves, the switching current density (4x10(6) A/cm(2)) is one order lower and the resistance change (2.78 m Omega mu m(2)) is three times higher than those gotten by using a simple spin polarizer. This spin torque enhancement is attributed to the exchange bias pinning acting on the polarizer (the fixed layer) with effective support of the nano-oxide layer, which together lead to a much higher current spin polarization. (c) 2006 American Institute of Physics.
- Keywords
- DRIVEN; DRIVEN; exchange-bias; nano-oxide layer; CIMS
- ISSN
- 0003-6951
- URI
- https://pubs.kist.re.kr/handle/201004/135231
- DOI
- 10.1063/1.2337532
- Appears in Collections:
- KIST Article > 2006
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