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New Science Findings from Advanced Science Research Center Outlined (Current-induced spin polarization on metal surfaces probed by spin-polarized...

July 11, 2014



New Science Findings from Advanced Science Research Center Outlined (Current-induced spin polarization on metal surfaces probed by spin-polarized positron beam)

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Science have been published. According to news originating from Takasaki, Japan, by NewsRx correspondents, research stated, "Current-induced spin polarization (CISP) on the outermost surfaces of Au, Cu, Pt, Pd, Ta, and W nanoscaled films were studied using a spin-polarized positron beam. The Au and Cu surfaces showed no significant CISP."

Our news journalists obtained a quote from the research from Advanced Science Research Center, "In contrast, the Pt, Pd, Ta, and W films exhibited large CISP (3~15% per input charge current of 10(5)?A/cm(2)) and the CISP of Ta and W were opposite to those of Pt and Pd. The sign of the CISP obeys the same rule in spin Hall effect suggesting that the spin-orbit coupling is mainly responsible for the CISP. The magnitude of the CISP is explained by the Rashba-Edelstein mechanism rather than the diffusive spin Hall effect."

According to the news editors, the research concluded: "This settles a controversy, that which of these two mechanisms dominates the large CISP on metal surfaces."

For more information on this research see: Current-induced spin polarization on metal surfaces probed by spin-polarized positron beam. Scientific Reports, 2014;4():4844. (Nature Publishing Group - www.nature.com/; Scientific Reports - www.nature.com/srep/)

The news correspondents report that additional information may be obtained from H.J. Zhang, Advanced Science Research Center, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan. Additional authors for this research include S. Yamamoto, Y. Fukaya, M. Maekawa, H. Li, A. Kawasuso, T. Seki, E. Saitoh and K. Takanashi (see also Science).

Keywords for this news article include: Asia, Japan, Science, Takasaki.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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