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Author Qin, Yuyuan ♦ Wang, Siqi ♦ Wang, Rui ♦ Bu, Haijun ♦ Song, Fengqi ♦ Wang, Baigeng ♦ Wang, Guanghou ♦ Wang, Xuefeng ♦ Wang, Xinran
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ DEPOSITION ♦ ELASTIC SCATTERING ♦ GRAPHENE ♦ IRIDIUM ♦ L-S COUPLING ♦ MAGNETORESISTANCE ♦ NANOSTRUCTURES ♦ RELAXATION TIME ♦ SPIN ♦ TEMPERATURE DEPENDENCE
Abstract The spin-orbit coupling strength of graphene can be enhanced by depositing iridium nanoclusters. Weak localization is intensely suppressed near zero fields after the cluster deposition, rather than changing to weak anti-localization. Fitting the magnetoresistance gives the spin relaxation time, which increases by two orders with the application of a back gate. The spin relaxation time is found to be proportional to the electronic elastic scattering time, demonstrating the Elliot–Yafet spin relaxation mechanism. A sizeable Kane–Mele-like coupling strength of over 5.5 meV is determined by extrapolating the temperature dependence to zero.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-16
Publisher Place United States
Journal Applied Physics Letters
Volume Number 108
Issue Number 20


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