Spin-dependent electron transport in protein-like single-helical molecules | Zendy

Aimin Guo | Zendy; QingFeng Sun | Zendy

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Spin-dependent electron transport in protein-like single-helical molecules

Author(s) -

Aimin Guo,

QingFeng Sun

Publication year - 2014

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.1407716111

Subject(s) - spintronics , spin (aerodynamics) , electron transport chain , condensed matter physics , electron , spin polarization , molecule , chemistry , physics , materials science , chemical physics , ferromagnetism , quantum mechanics , thermodynamics , biochemistry

We report on a theoretical study of spin-dependent electron transport through single-helical molecules connected by two nonmagnetic electrodes, and explain the experiment of significant spin-selective phenomenon observed in α-helical protein and the contradictory results between the protein and single-stranded DNA. Our results reveal that the α-helical protein is an efficient spin filter and the spin polarization is robust against the disorder. These results are in excellent agreement with recent experiments [Mishra D, et al. (2013) Proc Natl Acad Sci USA 110(37):14872-14876; Göhler B, et al. (2011) Science 331(6019):894-897] and may facilitate engineering of chiral-based spintronic devices.

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