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Abstract <p>The tunneling properties of electrons in CdTe/CdMnTe double-barrier heterostructure are examined with Dresselhaus spin-orbit interaction. This research work aims to examine the effect of the non-parabolicity of the conduction band on the spin-dependent tunneling properties. The well-known transfer matrix method is employed to find the transmission and hence the spin-polarization of electrons is calculated. The effect of non-parabolicity of the conduction band enhances the spin-separation as well as the degree of spin-polarization: 100% spin-polarization is achieved in this heterostructure when the effect of non-parabolicity is accounted even without any external field. The dwell time is also examined and it is noticed that the dwell time difference between the spin-components is high at a high concentration of Mn when the effect of non-parabolicity is accounted.</p>

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Resonant Tunneling of Electrons in CdTe/CdMnTe Double-barrier Nanostructures with Dresselhaus Spin-orbit Interaction: Effect of Non-parabolicity

  • 期刊论文

  • 发表日期：

    2025年6月18日

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  • I. S. Karthigayan,
  • P. Baby Shalini,
  • D. Gopinath,
  • S. Rafi Ahamed,
  • L. Bruno Chandrasekar,
  • P. Shunmuga Sundaram,
  • Sonaimuthu Mohandoss,
  • Subramanian Palanisamy

摘要

Abstract

The tunneling properties of electrons in CdTe/CdMnTe double-barrier heterostructure are examined with Dresselhaus spin-orbit interaction. This research work aims to examine the effect of the non-parabolicity of the conduction band on the spin-dependent tunneling properties. The well-known transfer matrix method is employed to find the transmission and hence the spin-polarization of electrons is calculated. The effect of non-parabolicity of the conduction band enhances the spin-separation as well as the degree of spin-polarization: 100% spin-polarization is achieved in this heterostructure when the effect of non-parabolicity is accounted even without any external field. The dwell time is also examined and it is noticed that the dwell time difference between the spin-components is high at a high concentration of Mn when the effect of non-parabolicity is accounted.