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Precession of entangled spin and pseudospin in double quantum dots
Rohrmeier, Christoph
and Donarini, Andrea
(2022)
Precession of entangled spin and pseudospin in double quantum dots.
Physical Review B 105 (20), p. 205418.
Date of publication of this fulltext: 24 May 2022 08:54
Article
DOI to cite this document: 10.5283/epub.52325
Abstract
Quantum dot spin valves are characterized by exchange fields which induce spin precession and generate current spin resonances even in the absence of spin splitting. Analogous effects have been studied in double quantum dots, in which the orbital degree of freedom, the pseudospin, replaces the spin in the valve configuration. We generalize, now, this setup to allow for arbitrary spin and orbital ...
Quantum dot spin valves are characterized by exchange fields which induce spin precession and generate current spin resonances even in the absence of spin splitting. Analogous effects have been studied in double quantum dots, in which the orbital degree of freedom, the pseudospin, replaces the spin in the valve configuration. We generalize, now, this setup to allow for arbitrary spin and orbital polarization of the leads, thus obtaining an even richer variety of current resonances, stemming from the precession dynamics of entangled spin and pseudospin. We observe for both vectors a delicate interplay of decoherence, pumping, and precession which can only be understood by also considering the dynamics of the spin-pseudospin correlators. The numerical results are obtained in the framework of a generalized master equation within the cotunneling approximation and are complemented by the analytics of a coherent sequential tunneling model.
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Rohrmeier, ChristophPreview
and Donarini, Andrea
(2022)
Precession of entangled spin and pseudospin in double quantum dots.
Physical Review B 105 (20), p. 205418.
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Rohrmeier, Christoph
and Donarini, Andrea
(2022)
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Details
| Item type | Article | ||||
| Journal or Publication Title | Physical Review B | ||||
| Publisher: | AMER PHYSICAL SOC | ||||
|---|---|---|---|---|---|
| Place of Publication: | COLLEGE PK | ||||
| Volume: | 105 | ||||
| Number of Issue or Book Chapter: | 20 | ||||
| Page Range: | p. 205418 | ||||
| Date | 13 May 2022 | ||||
| Institutions | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni | ||||
| Identification Number |
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| Related URLs |
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| Keywords | ; | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-523250 | ||||
| Item ID | 52325 |
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