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Spin-Torque Switching with the Giant Spin Hall Effect of Tantalum
Open accessAbstract
Giant Spin Hall: One of the primary challenges in the field of spin-electronics, which exploits the electron's spin rather than its charge, is to create strong currents of electrons with polarized spins. One way to do this is to use a ferromagnet as a polarizer, a principle used in magnetic tunnel junctions; however, these devices suffer from reliability problems. An alternative is the spin Hall effect, where running a charge current through a material generates a spin current in the transverse direction, but the efficiency of this process tends to be small. Liu et al. (p. 555 ) now show that the spin Hall effect in Tantalum in its high-resistance β phase generates spin currents strong enough to induce switching of the magnetization of an adjacent ferromagnet; at the same time, Ta does not cause energy dissipation in the ferromagnet. These properties allowed efficient and reliable operation of a prototype three-terminal device.
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Cites
Hirsch, J. E. (1999) · Physical Review Letters · doi:10.1103/physrevlett.83.1834 · Cited by 3,163
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Layer thickness dependence of the current-induced effective field vector in Ta|CoFeB|MgO
Kim, J., Sinha, J., Hayashi, M., Yamanouchi, M., Fukami, S., Suzuki, T., Mitani, S., & Ohno, H. (2013) · Nature Materials · doi:10.1038/nmat3522 · Cited by 916
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Scaling of Spin Hall Angle in 3d, 4d, and 5d Metals from Y 3 Fe 5 O 12 /Metal Spin Pumping
Wang, H. L., Du, C. H., Pu, Y., Adur, R., Hammel, P. C., & Yang, F. Y. (2014) · Physical Review Letters · doi:10.1103/physrevlett.112.197201 · Cited by 557
Metadata
- Authors
- Liu, L., Pai, C.-F., Li, Y., Tseng, H. W., Ralph, D. C., & Buhrman, R. A.
- Venue
- Science
- Published
- 2012-05-04
- Volume
- 336
- Issue
- 6081
- Pages
- 555-558
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2014744284
- Cited by
- 4,108
- References
- 1
- FWCI
- 82.41
- Type
- journal article
- Language
- en
- Open access
- green
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- Liu, L., Pai, C.-F., Li, Y., Tseng, H. W., Ralph, D. C., & Buhrman, R. A. (2012). Spin-Torque Switching with the Giant Spin Hall Effect of Tantalum. Science. https://doi.org/10.1126/science.1218197
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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