TY - JOUR
ID - 3639
TI - Non local conductance of topological insulator F/S/I/S/F junction
JO - Scientia Iranica
JA - SCI
LA - en
SN - 1026-3098
AU - Khouzestani, H. F.
AU - Vali, R.
AD - School of Physics, Damghan University, Damghan, PO Box 36715/364, Damghan, Iran
Y1 - 2014
PY - 2014
VL - 21
IS - 6
SP - 2485
EP - 2489
KW - Non local conductance
KW - Topological insulator
KW - Dirac Bogoliubov-de Gennes equation
DO -
N2 - in this work the non local conductance (NLC) in the topological insulator ferromagnetic / superconductor / insulator / superconductor / ferromagnetic (F/S/I/S/F) structure is numerically investigated. The insulator region is a thin barrier and the magnetization of the ferromagnetic regions is considered as perpendicular to the surface of the topological insulator. Our results indicate when the magnetization vectors in the ferromagnetic regions are parallel (anti-parallel) the crossed Andreev reflection (electron elastic Cotunneling) process does not occur and also the NLC in terms of barrier strength shows a periodic behaviour. In addition, the NLC as a function of the barrier strength shows an on-off quantum switching properties. We find also that this junction can be used as a quantum entangler devise which is of high important in quantum computing.
UR - http://scientiairanica.sharif.edu/article_3639.html
L1 - http://scientiairanica.sharif.edu/article_3639_8347079c9c7c56690dc40462d7fd9083.pdf
ER -