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Letter

Nature Physics 4, 373–376 (1 May 2008) | doi:10.1038/nphys931

Electric-field-controlled spin reversal in a quantum dot with ferromagnetic contacts

J. R. Hauptmann , J. Paaske & P. E. Lindelof

Manipulation of the spin states of a quantum dot by purely electrical means is a highly desirable property of fundamental importance for the development of spintronic devices such as spin filters, spin transistors and single spin memories as well as for solid-state qubits. An electrically gated quantum dot in the Coulomb blockade regime can be tuned to hold a single unpaired spin-1/2, which is routinely spin polarized by an applied magnetic field.