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HomeKey Engineering MaterialsKey Engineering Materials Vol. 833Electron Spin-Dependent Tunneling Current through...

Electron Spin-Dependent Tunneling Current through a Trapezoidal Potential Barrier under Airy Wavefunction Approach

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Abstract:

In this paper, an analytical expression of the electron spin-dependent tunneling current through a potential barrier by applying a bias voltage was investigated. An Airy wavefunction was applied to derive the transmittance through the barrier by considering a zinc-blende material, which depends on the spin states indicated as ‘up’ and ‘down’. The obtained transmittance was employed to compute the polarization and spin-dependent tunneling current. The spin-dependent tunneling current was then observed at various bias voltages and temperatures. It was shown that the spin-polarized current increases as the bias voltage increases. It was also shown that the increase of temperature enhances the spin-dependent tunneling current.

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Periodical:

Key Engineering Materials (Volume 833)

Pages:

152-156

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.833.152

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Online since:

March 2020

Authors:

Fatimah A. Noor*, Ezra Nabila, Euis Sustini, Khairurrijal Khairurrijal

Keywords:

Airy Wavefunction, Potential Barrier, Spin-Polarized Current, Zinc-Blende

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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