Enhanced spin-polarized transport through DNA double helix by gate voltage

Article

关键词: CHARGE-TRANSPORT;    SPINTRONICS;   

DOI  :  10.1103/PhysRevB.86.035424

来源: SCIE

【 摘 要 】

We report on a way to manipulate the spin transport through double-stranded DNA contacted by normal-metal electrodes. On the basis of an effective model Hamiltonian, the conductance and the spin polarization are calculated in the presence of a gate voltage by using the Landauer-Buttiker formula. Our results indicate that the spin polarization presents strong dependence on the magnitude as well as the direction of the gate voltage. The spin polarization can be significantly enhanced by tuning the gate voltage and shows oscillating behavior with increasing the DNA length.

【 授权许可】

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