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Title: Giant enhancement of spin pumping in the out-of-phase precession mode

We theoretically study the spin pumping from the two ferromagnetic layers embedded in a normal metal and investigate the spin current and spin accumulation generated by the precessing magnetizations, focusing on their dependence on the relative precessional motion and the layer separation. We demonstrate a giant enhancement of spin pumping induced in the out-of-phase precession mode of the magnetizations in which the pumped spin current and spin accumulation are greatly enhanced compared to those in the in-phase precession mode. The giant enhancement of spin pumping is discussed in relation to an enhanced Gilbert damping.
Authors:
 [1]
  1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
Publication Date:
OSTI Identifier:
22283301
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; DAMPING; ELECTRIC CURRENTS; FERROMAGNETIC MATERIALS; FERROMAGNETISM; LAYERS; MAGNETIZATION; METALS; PRECESSION; PUMPING; SPIN