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Spin Polarization Oscillations and Coherence Time in the Random Interaction Approach
Author
Source
Advances in Condensed Matter Physics
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-02
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
We study the time evolution of the survival probability and the spin polarization of a dissipative nondegenerate two-level system in the presence of a magnetic field in the Faraday configuration.
We apply the Extended Gaussian Orthogonal Ensemble approach to model the stochastic system-environment interaction and calculate the survival and spin polarization to first and second order of the interaction picture.
We present also the time evolution of the thermal average of these quantities as functions of the temperature, the magnetic field, and the energy-levels density, for ρ(ϵ)∝ϵs, in the subohmic, ohmic, and superohmic dissipation forms.
We show that the behavior of the spin polarization calculated here agrees rather well with the time evolution of spin polarization observed and calculated, recently, for the electron-nucleus dynamics of Ga centers in dilute (Ga,N)As semiconductors.
American Psychological Association (APA)
Pereyra, P.. 2019. Spin Polarization Oscillations and Coherence Time in the Random Interaction Approach. Advances in Condensed Matter Physics،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1117640
Modern Language Association (MLA)
Pereyra, P.. Spin Polarization Oscillations and Coherence Time in the Random Interaction Approach. Advances in Condensed Matter Physics No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1117640
American Medical Association (AMA)
Pereyra, P.. Spin Polarization Oscillations and Coherence Time in the Random Interaction Approach. Advances in Condensed Matter Physics. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1117640
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1117640