期刊
PHYSICAL REVIEW LETTERS
卷 116, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.196602
关键词
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资金
- National Basic Research Program of China [2012CB921304]
- NNSF-China [61376105]
- Royal Netherlands Academy of Arts and Sciences (KNAW)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) through the research programme of Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) through the NWO Exacte Wetenschappen (Physical Sciences)
The spin Hall angle (SHA) is a measure of the efficiency with which a transverse spin current is generated from a charge current by the spin-orbit coupling and disorder in the spin Hall effect (SHE). In a study of the SHE for a Pt vertical bar Py (Py = Ni80Fe20) bilayer using a first-principles scattering approach, we find a SHA that increases monotonically with temperature and is proportional to the resistivity for bulk Pt. By decomposing the room temperature SHE and inverse SHE currents into bulk and interface terms, we discover a giant interface SHA that dominates the total inverse SHE current with potentially major consequences for applications.
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