Donarini, Andrea and Begemann, Georg and Grifoni, Milena (2010) Interference effects in the Coulomb blockade regime: Current blocking and spin preparation in symmetric nanojunctions. PHYSICAL REVIEW B, 82 (12): 125451. ISSN 1098-0121,
Full text not available from this repository.Abstract
We consider nanojunctions in the single-electron tunneling regime which, due to a high degree of spatial symmetry, have a degenerate many-body spectrum. As a consequence, interference phenomena which cause a current blocking can occur at specific values of the bias and gate voltage. We present here a general formalism to give necessary and sufficient conditions for interference blockade also in the presence of spin-polarized leads. As an example we analyze a triple quantum-dot single-electron transistor. For a setup with parallel polarized leads, we show how to selectively prepare the system in each of the three states of an excited spin triplet without application of any external magnetic field.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NANOTUBE QUANTUM DOTS; ELECTRON INTERFERENCE; TRANSPORT; SPINTRONICS; MOLECULES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Jul 2020 06:35 |
| Last Modified: | 13 Jul 2020 06:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24162 |
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