Spin transport in helical biological systems

Journal Article · Wed Aug 20 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4893525· OSTI ID:22308258

Díaz, Elena ^[1]; Gutierrez, Rafael ^[2]

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1. GISC, Departamento de Física de Materiales, Universidad Complutense, E-28040 Madrid (Spain)
2. Institute for Materials Science, Dresden University of Technology, 01062 Dresden (Germany)

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.

• OSTI ID: 22308258
• Journal Information: AIP Conference Proceedings, Vol. 1610, Issue 1; Conference: TIDS15: 15. international conference on transport in interacting disordered systems, Sant Feliu de Guixols (Spain), 1-5 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
60 APPLIED LIFE SCIENCES
DNA
ELECTRONIC STRUCTURE
ELECTRONS
POTENTIALS
SPIN
SPIN ORIENTATION