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- Title
Effect of Dephasing on the Current through a Periodically Driven Quantum Point Contact.
- Authors
Ermakov, I.; Lychkovskiy, O.
- Abstract
We consider two one-dimensional quantum XX magnets linked by a periodically driven quantum point contact. If magnets are initially polarized in opposite directions, one expects that a spin current through the quantum point contact will establish. It has been shown recently [Phys. Rev. B 103, L041405 (2021)] that, in fact, when the driving frequency exceeds a critical value, the current halts completely, the quantum point contact being effectively insulating. Here we enquire how this picture is affected by quantum dephasing. Our findings reveal that any nonzero dephasing restores the current.
- Subjects
QUANTUM point contacts
- Publication
JETP Letters, 2024, Vol 119, Issue 1, p40
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364023603299