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Monte Carlo simulation of spin relaxation in core-shell nanowires of dilute magnetic semiconductors
S. Sabiq Chishti,Bahniman Ghosh,Bhupesh Bishnoi 한국물리학회 2013 Current Applied Physics Vol.13 No.9
Spin transport behaviour in stand-alone and core-shell nanowire (NW) structure composed of dilutemagnetic semiconductor (DMS) has been analysed using Semi-classical Monte Carlo approach. Inspiredby recent attempts on exploring various factors instrumental in determining the spin dynamics, we haveemployed four DMS materials, namely, CdMnS, CdMnSe, ZnMnSe and CdMnTe for our study. Dominantmechanisms for spin relaxation, D’yakonov-Perel and Elliot-Yafet, have been actively employed in ourheuristic model to simulate the spin transport. The dependence of spin relaxation length (SRL) on thediameter of the core has been observed and explained. The first order calculations used to develop themodel shows the superiority of the core-shell structure over stand-alone nanowire (NW) structure interms of spin transport.