期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 20, 页码 4648-4651出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.4648
关键词
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We consider a quantum dot attached to leads in the Coulomb blockade regime that has a spin 1/2 ground state. We show that, by applying an ESR field to the dot spin, the stationary current in the sequential tunneling regime exhibits a new resonance peak whose linewidth is determined by the single spin decoherence time T-2. The Rabi oscillations of the dot spin are shown to induce coherent current oscillations from which T-2 can be deduced in the time domain. We describe a spin inverter which can be used to pump current through a double dot via spin hips generated by ESR.
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