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Spin Relaxation in Germanium Nanowires
Joint Authors
Kumar, Ashish
Akram, M. W.
Ghosh, Bahniman
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-26
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
We use semiclassical Monte Carlo approach along with spin density matrix calculations to model spin polarized electron transport.
The model is applied to germanium nanowires and germanium two-dimensional channels to study and compare spin relaxation between them.
Spin dephasing in germanium occurs because of Rashba Spin Orbit Interaction (structural inversion asymmetry) which gives rise to the D’yakonov-Perel (DP) relaxation.
In germanium spin flip scattering due to the Elliot-Yafet (EY) mechanism also leads to spin relaxation.
The spin relaxation tests for both 1D and 2D channels are carried out at different values of temperature and driving electric field, and the variation in spin relaxation length is recorded.
Spin relaxation length in a nanowire is found to be much higher than that in a 2D channel due to suppression of DP relaxation in a nanowire.
At lower temperatures the spin relaxation length increases.
This suggests that spin relaxation in germanium occurs slowly in a 1D channel (nanowires) and at lower temperatures.
The electric field dependence of spin relaxation length was found to be very weak.
American Psychological Association (APA)
Kumar, Ashish& Akram, M. W.& Ghosh, Bahniman. 2012. Spin Relaxation in Germanium Nanowires. ISRN Nanomaterials،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-454513
Modern Language Association (MLA)
Kumar, Ashish…[et al.]. Spin Relaxation in Germanium Nanowires. ISRN Nanomaterials No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-454513
American Medical Association (AMA)
Kumar, Ashish& Akram, M. W.& Ghosh, Bahniman. Spin Relaxation in Germanium Nanowires. ISRN Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-454513
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-454513