Regensburg 2013 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 32: Spintronics and magnetic semiconductors (MA, jointly with HL)

HL 32.3: Talk

Tuesday, March 12, 2013, 10:00–10:15, H3

Flux quantization in spintronic devices — •Wei Chen, Peter Horsch, and Dirk Manske — Max Planck Institute for Solid State Research, Stuttgart

We show that electric flux vector, defined as the cross product of electric field and trajectory, manifests quantization in various spintronic devices in the same sense as quantization of magnetic flux in a SQUID. This quantization is related to many fascinating phenomena such as field-adjustable spin Josephson effect, the current-voltage characteristics of spin-FET, and persistent spin current in a metallic ring. In the case where the quantization is purely due to Aharanov-Casher effect, the flux quantum is determined only by fundamental constants.