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dc.contributor.authorJ. Li
dc.contributor.authorShelford
dc.contributor.authorP. Shafer
dc.contributor.authorA. Tan
dc.contributor.authorJ. X. Deng
dc.contributor.authorP. S. Keatley
dc.contributor.authorC. Hwang
dc.contributor.authorE. Arenholz
dc.contributor.authorG. van der Laan
dc.contributor.authorHicken, RJ
dc.contributor.authorZ. Q. Qiu
dc.date.accessioned2016-07-12T11:38:21Z
dc.date.issued2016-08-11
dc.description.abstractDespite recent progress in spin-current research, the detection of spin current has mostly remained indirect. By synchronizing a microwave waveform with synchrotron x-ray pulses, we use the ferromagnetic resonance of the Py (Ni81Fe19) layer in a Py/Cu/Cu75Mn25/Cu/Co multilayer to pump a pure AC spin current into the Cu75Mn25 and Co layers, and then directly probe the spin current within the Cu75Mn25 layer and the spin dynamics of the Co layer by x-ray magnetic circular dichroism. This element-resolved pump-probe measurement unambiguously identifies the AC spin current in the Cu75Mn25 layer.en_GB
dc.description.sponsorshipWe acknowledge helpful discussion with Arne Brataas. Financial support from National Science Foundation DMR-1504568 NRF through the Global Research Laboratory project of Korea is gratefully acknowledged. The Advanced Light Source is supported by the US Department of Energy under contract number DE-AC02-05CH11231. JD acknowledges fellowship support from the China Scholarship Council and National Science Foundation of China under Grant Nos. 51331006. LRS, PSK, and RJH acknowledge the support of the Engineering and Physical Sciences Research Council (EPSRC) through grants EP/J018767/1 and EP/I038470/1. GvdL acknowledges support of the EPSRC through grant EP/J018767/1.en_GB
dc.identifier.citationPhysical Review Letters, 2016, 117, 076602
dc.identifier.doi10.1103/PhysRevLett.117.076602
dc.identifier.urihttp://hdl.handle.net/10871/22513
dc.language.isoenen_GB
dc.publisherAmerican Physical Societyen_GB
dc.rightsThis is the author accepted manuscript. The final version is available from the American Physical Society via the DOI in this record.
dc.titleDirect detection of pure AC spin-current by x-ray pump-probe measurementsen_GB
dc.typeArticleen_GB
dc.identifier.issn1079-7114
dc.identifier.journalPhysical Review Lettersen_GB


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