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Generation of pure spin currents in a single electron transistor with a superconducting island

AutorCostache, Marieta; Valenzuela, Sergio O.
Fecha de publicación2011
EditorSociety of Photo-Optical Instrumentation Engineers
CitaciónProceedings of SPIE 8100: 81000I (2011)
ResumenWe describe a spin filter at the single-electron level that produces pure spin currents with no net bias. Our device is based on the ground-state energetics of a single-electron transistor comprising a superconducting island connected to normal leads via tunnel barriers with different resistances that break spatial symmetry. The current has opposite spin polarization when the current is reversed, which leads to a dc spin current when applying an alternating charge current with zero mean, as expected in a spin ratchet. We demonstrate spin transport and quantify the spin ratchet efficiency by means of ferromagnetic leads with known spin polarization.
DescripciónTrabajo presentado al "Spintronics IV" celebrado en California (US) el 21 de agosto de 2011.
Versión del editorhttp://dx.doi.org/10.1117/12.890231
URIhttp://hdl.handle.net/10261/122544
DOI10.1117/12.890231
Identificadoresdoi: 10.1117/12.890231
issn: 0277-786X
e-issn: 1996-756X
Aparece en las colecciones: (CIN2) Artículos
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