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Rashba spin–orbit interaction effect on multiphoton optical transitions in a quantum dot
Author(s) -
Kumar Manoj,
Lahon Siddhartha,
Kumar Jha Pradip,
Mohan Man
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201248449
Subject(s) - floquet theory , physics , spin–orbit interaction , condensed matter physics , quantum dot , terahertz radiation , spin (aerodynamics) , coupling (piping) , laser , magnetic field , field (mathematics) , optoelectronics , quantum mechanics , materials science , mathematics , nonlinear system , metallurgy , thermodynamics , pure mathematics
Abstract We demonstrate in this work the effect of Rashba spin–orbit interaction (SOI) on multiphoton optical transitions of a quantum dot (QD) in the presence of a terahertz (THz) laser field and external static magnetic field. This combination is solved by accurate nonperturbative Floquet theory. Investigations are made for the optical response of intraband transitions between the various states of the conduction band with spin flipping. It is found that spin‐flip transitions and corresponding multiphoton transitions are strongly affected by Rashba spin orbit coupling and THz laser fields. This aspect will enhance the ongoing efforts for making ultrasensitive optospintronics devices.