Spin relaxation in a magnetic field in Al
Abstract
The direct electrical method was used to study the behavior of the spin Hall effect in a magnetic field perpendicular to the injection current in aluminum samples with resistivities that differed by two orders of magnitude at a temperature of 4.2 K. The parabolic behavior of the spin-Hall voltage curves with maxima at the same value of the magnetic field was discovered. It was proposed an explanation which is based on the competition of two universal mechanisms associated with the accumulation of spins - the dependences of spin magnetization and spin relaxation length on the magnetic field strength.
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