標題: Current induced localized domain wall oscillators in NiFe/Cu/NiFe submicron wires
作者: Chang, L. J.
Lin, Pang
Lee, S. F.
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 10-十二月-2012
摘要: We experimentally demonstrate domain wall (DW) oscillators excited by in-plane ac current through permalloy based pseudo-spin valve wires, which contain one pair of artificial protrusions. By measuring the spin-transfer-torque induced resonance of a pinned antiparallel transverse DW, under transverse external fields, we show that the antiparallel transverse DW oscillates with a resonance frequency as high as 2.92 GHz, depending on the widths of protrusions. For DW oscillations induced by injection of dc currents, the observed peaks in dV/dI associated with the reversible change of magnetoresistance are attributed to the reversible motions of the DW. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4770306]
URI: http://dx.doi.org/10.1063/1.4770306
http://hdl.handle.net/11536/20835
ISSN: 0003-6951
DOI: 10.1063/1.4770306
期刊: APPLIED PHYSICS LETTERS
Volume: 101
Issue: 24
結束頁: 
顯示於類別:期刊論文


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