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양자나노과학연구소
Journal papers
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Many-body nonequilibrium effects in all-electric electron spin resonance
Title
Many-body nonequilibrium effects in all-electric electron spin resonance
Authors
Reina-Gálvez J.
;
Wolf C.
;
Lorente N.
Ewha Authors
Christoph Wolf
SCOPUS Author ID
Christoph Wolf
Issue Date
2023
Journal Title
Physical Review B
ISSN
2469-9950
Citation
Physical Review B vol. 107, no. 23
Publisher
American Physical Society
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
Motivated by recent developments in measurements of electron spin resonances of individual atoms and molecules with a scanning tunneling microscope (ESR-STM), we study electron transport through an impurity under periodic driving as a function of the transport parameters in a model junction. The model consists of a single-orbital quantum impurity connected to two electrodes via time-dependent hopping terms. The hopping terms are treated at the lowest order in perturbation theory to recover a Lindblad-like quantum master equation with electron transport. As in the experiment, the ESR-STM signal is given by the variation of the long-time DC current with the driving frequency. The density-matrix coherences play an important role in the evaluation of the ESR-STM signal. Electron correlation is included in our impurity mode. The charging energy U has significant influence on the spin dynamics depending on the sign and magnitude of the applied DC bias. Our model allows direct insight into the origin of the ESR signal from the many-body dynamics of the impurity. © 2023 American Physical Society.
DOI
10.1103/PhysRevB.107.235404
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