Spin transport in helical biological systems



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Díaz García, Elena and Gutierrez, Rafael (2014) Spin transport in helical biological systems. In 15th International Conference on Transport in Interacting Disordered Systems (TIDS15). AIP Conference Proceedings (1610). Amer Inst Physics, p. 6. ISBN 978-0-7354-1246-0

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Official URL: http://dx.doi.org/10.1063/1.4893525


Motivated by the recent experimental demonstration of spin selective effects in monolayers of double-stranded DNA oligomers, our work presents a minimal model to describe electron transmission through helical fields. Our model highlight that the lack of inversion symmetry due to the chirality of the potential is a key factor which will lead to a high spin-polarization (SP). We also study the stability of the SP against fluctuations of the electronic structure induced by static disorder affecting the on-site energies. In the energy regions where the spin- filtering occurs, our results remain stable against moderate disorders although the SP is slightly reduced.

Item Type:Book Section
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© 2014 AIP Publishing LLC 978-0-7354-1246-0/$30.00.
ISSN: 0094-243X
International Conference on Transport in Interacting Disordered Systems (15. 2013. Sant Feliu de Guixols, España).
This work was supported by the Ministerio de Economia y Comptetitividad (MINECO) project PRI-AIBDE-2011-0927 and by the projectGerman Academic Exchange Service (DAAD) 54367888 within the joint program Acciones Integradas. Computational resources were provided by the ZIH at TU-Dresden. E.D was further supported by MINECO project MAT 2010-17180. R.G. acknowledges support from the German Excellence Initiative: Cluster of Excellence EXC 1056 "Center for Advancing Electronics Dresden" (cfAED).

Uncontrolled Keywords:Spin-filtering; DNA-molecules; helical field; Anderson disorder
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:42748
Deposited On:25 May 2017 18:06
Last Modified:06 Jun 2017 07:27

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