Switching off the magnetic exchange coupling by quantum resonances [PDF]
Ching-Hao Chang, Tzay-Ming HongWe clarify the role of quantum-well states in magnetic trilayer systems from majority carrier in the ferromagnetic and all carriers in the antiferromagnetic configurations. In addition to simple derivations, heuristic pictures are provided to explain effects of a capping layer and side-layer modulation in recent experiments. This allows a more flexible tuning of or even turning off the interlayer exchange coupling.View original: http://arxiv.org/abs/1205.0365
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