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https://scholarbank.nus.edu.sg/handle/10635/98859
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 Spintronics |
Issue Date: | 30-Sep-2007 | Citation: | 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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/98859 | ISSN: | 02179792 |
Appears in Collections: | Staff Publications |
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