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Magnetotransport of lateral Py/Pt/Py spin valve device
Author(s) -
Han Giju,
Chang Joonyeon,
Eom Jonghwa,
Kim Hyungjun,
Kim Young Keun,
Han SukHee
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200777204
Subject(s) - spin valve , spin diffusion , condensed matter physics , spin polarization , spin (aerodynamics) , ferromagnetism , materials science , electrode , antiparallel (mathematics) , chemistry , nuclear magnetic resonance , magnetoresistance , physics , magnetic field , electron , quantum mechanics , thermodynamics
Spin injection and accumulation have been investigated for Py/Pt/Py lateral spin valves with various channel length. Clear spin valve effects were found at antiparallel magnetic configuration of two ferromagnetic electrodes. The observation of memory effect suggests the spin valve effect observed in Pt channel is resulted from effective spin injection and detection. The magnitude of spin valve signal decreases as the channel length increases. The measurement yields that spin diffusion length and spin injection polarization of Pt channel is 120 nm and 18% at 5K. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)