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Paper   IPM / Nano-Sciences / 12919
School of Nano Science
  Title:   Angular dependence of shot noise in the presence of Rashba spin-orbit coupling in semiconductor spintronics junctions
  Author(s): 
1 . S.M. Mirzanian
2 . Ali Asghar Shokri
  Status:   Published
  Journal: Physica E
  No.:  December 2013
  Vol.:  54
  Year:  2013
  Publisher(s):   ElsevierB.V.
  Supported by:  IPM
  Abstract:
Weinvestigatespin-dependent current and shot noise, taking in to account the Rashba spin-orbit coupling (RSOC)effect in double diluted magnetic semiconductor (DMS)barrier resonant tunneling diodes. The calculation is based on an effective mass approach.The magnetization of DMS is calculated by the mean-field approximation in low magnetic field. The spin-splitting of DMS depends on the sp-d exchange interaction. We also examine the dependence of transport properties of CdTe/CdMnTe hetero structures on applied voltage andrelative angle between the magnetization of two DMS layers. It is found that the RSOC has great different influence on the transport properties of tunneling electrons with spin-up and spin down,which have different contributions to the current and the shot noise.Also, we can see that the RSOC enhances the spin polarization of the system, which makes the nanostructure a good candidate for new spin filter devices. Thus,these numerical results may shedlight on the next applications of quantum multilayer systems and make them a good choice for future spintronics devices.

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