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Enhancement of Pure Spin Currents in Spin Pumping Y3Fe5O12/Cu/metal Trilayers through Spin Conductance Matching
- Source :
- Phys. Rev. Applied 1, 044004 (2014)
- Publication Year :
- 2014
-
Abstract
- Spin transport efficiency in heterostructures depends on the spin conductances of each constituent and their interfaces. We report a comparative study of spin pumping in Y3Fe5O12/Cu/Pt and Y3Fe5O12/Cu/W trilayers. Surprisingly, the insertion of a Cu interlayer between Y3Fe5O12 and W substantially improves (over a factor of 4) the spin current injection into W while similar insertion between Y3Fe5O12 and Pt degrades the spin current. This is a consequence of a much improved Y3Fe5O12/Cu spin mixing conductance relative to that for Y3Fe5O12/W. This result implies the possibility of engineered heterostructures with matching spin conductances to enable optimal spin transport efficiency.<br />Comment: 18 pages, 5 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Applied 1, 044004 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1405.4775
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevApplied.1.044004