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Title: Pumping current in a quantum dot by an oscillating magnetic field
Authors: Zhao, Y.Z.
Li, H.
Li, B. 
Keywords: Pumping current
Quantum dot
Spin current
Issue Date: 30-Sep-2007
Source: Zhao, Y.Z.,Li, H.,Li, B. (2007-09-30). Pumping current in a quantum dot by an oscillating magnetic field. International Journal of Modern Physics B 21 (23-24) : 4284-4288. ScholarBank@NUS Repository.
Abstract: We investigate spin and charge current through a quantum dot pumped by a time-varying magnetic field. Using the density matrix method, quantum rate equations for the electronic occupation numbers in the quantum dot are obtained and solved in the stationary state limit for a wide set of parameters. Both charge and spin currents are expressed explicitly in terms of several relevant parameters and analyzed in detail. The results suggest a way of optimizing experimental parameters to obtain an maximal spin current without the charge current flow. © World Scientific Publishing Company.
Source Title: International Journal of Modern Physics B
ISSN: 02179792
Appears in Collections:Staff Publications

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