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Coulomb promotion of spin-dependent tunneling

Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Sergeij I. Kulinich ; Robert I. Shekhter ; Mats Jonson ; V. M. Vinokur
Physical Review Letters (0031-9007). Vol. 95 (2005), 11, p. 116806.
[Artikel, refereegranskad vetenskaplig]

We study transport of spin-polarized electrons through a magnetic single-electron transistor (SET) in the presence of an external magnetic field. Assuming the SET to have a nanometer size central island with a single-electron level we find that the interplay on the island between coherent spin-flip dynamics and Coulomb interactions can make the Coulomb correlations promote rather than suppress the current through the device. We find the criteria for this new phenomenon-Coulomb promotion of spin-dependent tunneling-to occur. © 2005 The American Physical Society.

Nyckelord: Electron tunneling, Correlation methods, Electromagnetic wave polarization, Electrons, Magnetic fields, Transistors

Denna post skapades 2007-10-24. Senast ändrad 2013-01-22.
CPL Pubid: 56960


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