The steady state in noncollinear magnetic multilayers
Jianwei Zhang, Peter M Levy
TL;DR
This paper compares two theoretical steady state solutions for current in noncollinear magnetic multilayers, concluding that the solution with continuous spin currents predicts lower resistance and is more physically plausible.
Contribution
It introduces a comparison between two steady state models and advocates for the continuous spin current solution based on resistance estimates and the entropic principle.
Findings
Continuous spin current solution has lower resistance.
The entropic principle favors the continuous solution.
Discontinuity solution predicts higher resistance.
Abstract
There are at least two different putative steady state solutions for current across noncollinear magnetic multilayers; one has a discontinuity in the spin current at the interface the other is continuous. We compare the resistance of the two and find the solution with the continuous spin currents is lower. By using the entropic principle we can state that this solution is a better estimate of the resistance for a noncollinear magnetic
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