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Title: Spin orbit splitting of the photon induced Fano resonance in an oscillating graphene electrostatic barrier

We investigate theoretically the effect of a time dependent oscillating potential on the transport property of the Dirac Fermion through a monolayer graphene electrostatic barrier under the influence of the Rashba spin orbit interaction. The time dependent problem is solved in the frame work of the non-perturbative Floquet approach. It is noted that the dynamic condition of the barrier may be controlled by tuning the Rashba parameter. Introduction of the spin orbit interaction causes splitting of the Fano resonance (FR), a characteristic feature in photon assisted tunneling. The separation between the spin split FR's gives an indirect measure of the fine structure of the quasi-hole bound state inside the barrier. The present findings on the Rashba splitting of the FR and its external control by tuning the oscillating field parameters might have potential for applications in spintronic devices, especially in the spin field effect transistors. The spin polarization of different Floquet sidebands is found to be quite sensitive to the spin-pseudospin interaction.
Authors:
 [1] ;  [2]
  1. Department of Physics (UG and PG), P. K. College, Contai, Purba Medinipur, West Bengal-721401 (India)
  2. Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032 (India)
Publication Date:
OSTI Identifier:
22273675
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BOUND STATE; FERMIONS; FIELD EFFECT TRANSISTORS; FINE STRUCTURE; GRAPHENE; HOLES; L-S COUPLING; ORBITS; PHOTONS; POTENTIALS; RESONANCE; SPIN; SPIN ORIENTATION; TIME DEPENDENCE; TUNNEL EFFECT