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

ABSTRACT: 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 ?-helical protein and the contradictory results between the protein and single-stranded DNA. Our results reveal that the ?-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.

SUBMITTER: Guo AM

PROVIDER: S-EPMC4136615 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature

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

Guo Ai-Min AM Sun Qing-Feng QF

Proceedings of the National Academy of Sciences of the United States of America 20140728 32

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 recen ...[more]

PMID: 25071198

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