Simultaneous effect of laser and magnetic field on bound magnetic polaron in type I and reverse type I core/shell semimagnetic nanostructures

被引:3
作者
Balakrishnan, Anitha [1 ]
Perumal, Nithiananthi [1 ]
机构
[1] Gandhigram Rural Inst, Dept Phys, Nanostruct Lab, Gandhigram 624302, Tamil Nadu, India
关键词
Semi-magnetic nanosystem; Core-shell nanostructures; Bound magnetic polaron; Spin polaronic energy; Laser field; Magnetic field; IMPURITIES; EXCHANGE; DYNAMICS; STATES;
D O I
10.1016/j.physe.2020.114613
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Combined effect of magnetic and the intense laser fields on the donor-bound magnetic polaron of semi-magnetic core shell nanostructures is investigated theoretically to explore them for opto-electronic, spintronic devices. Based on the band alignments of donor, the two probable semi-magnetic Core Shell Nanostructures (CSNs) namely type I CdTe/Cd0.7Mn0.3Te and reverse type I Cd0.7Mn0.3Te/CdTe are considered in the present study. The interplay of Bound Magnetic Polamn (BMP) with the donor impurity is explored through spin polamnic energy (Esp) and magnetization (M) for different laser and magnetic fields by applying laser field intensity ranging from 0.58 to 14.5 mu W/angstrom(2) of frequency 10 THz along with magnetic field (B) of about 5-30 T. The dimensional impact of dot and the barrier of the respective CSN on the sublevel Energy (SE), E-SP and M is also examined under applied external fields. The carriers of reverse type I CSN are more dynamic and perform diverse behaviour in the presence of external laser and magnetic fields.
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页数:9
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