Dynamical spin-blockade in a quantum dot with paramagnetic leadsA. Cottet and W. Belzig
Departement Physik und Astronomie, Universität Basel Klingelbergstrasse 82, CH-4056 Basel, Switzerland
(Received 26 January 2004; accepted 20 February 2004)
We investigate current fluctuations in a three-terminal quantum dot in the sequential tunneling regime. Dynamical spin-blockade can be induced when the spin-degeneracy of the dot states is lifted by a magnetic field. This results in super-Poissonian shot noise and positive zero-frequency cross-correlations. Our proposed setup can be realized with semiconductor quantum dots.
73.23.-b - Electronic transport in mesoscopic systems.
72.70.+m - Noise processes and phenomena.
72.25.Rb - Spin relaxation and scattering.
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