Spin specific electron conduction through DNA oligomers

Zouti Xie; Tal Z. Markus; Sidney R. Cohen; Zeev Vager; Rafael Gutierrez; Ron Naaman

doi:10.1021/nl2021637

Spin specific electron conduction through DNA oligomers

Zouti Xie, Tal Z. Markus, Sidney R. Cohen, Zeev Vager, Rafael Gutierrez, Ron Naaman^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

287 Scopus citations

Abstract

Spin-based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. Most of the development in spintronics is currently based on inorganic materials. Despite the fact that the magnetoresistance effect has been observed in organic materials, until now spin selectivity of organic based spintronics devices originated from an inorganic ferromagnetic electrode and was not determined by the organic molecules themselves. Here we show that conduction through double-stranded DNA oligomers is spin selective, demonstrating a true organic spin filter. The selectivity exceeds that of any known system at room temperature. The spin dependent resistivity indicates that the effect cannot result solely from the atomic spin-orbit coupling and must relate to a special property resulting from the chirality symmetry. The results may reflect on the importance of spin in determining electron transfer rates through biological systems.

Original language	English
Pages (from-to)	4652-4655
Number of pages	4
Journal	Nano Letters
Volume	11
Issue number	11
DOIs	https://doi.org/10.1021/nl2021637
State	Published - 9 Nov 2011
Externally published	Yes

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title = "Spin specific electron conduction through DNA oligomers",

abstract = "Spin-based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. Most of the development in spintronics is currently based on inorganic materials. Despite the fact that the magnetoresistance effect has been observed in organic materials, until now spin selectivity of organic based spintronics devices originated from an inorganic ferromagnetic electrode and was not determined by the organic molecules themselves. Here we show that conduction through double-stranded DNA oligomers is spin selective, demonstrating a true organic spin filter. The selectivity exceeds that of any known system at room temperature. The spin dependent resistivity indicates that the effect cannot result solely from the atomic spin-orbit coupling and must relate to a special property resulting from the chirality symmetry. The results may reflect on the importance of spin in determining electron transfer rates through biological systems.",

author = "Zouti Xie and Markus, {Tal Z.} and Cohen, {Sidney R.} and Zeev Vager and Rafael Gutierrez and Ron Naaman",

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T1 - Spin specific electron conduction through DNA oligomers

AU - Xie, Zouti

AU - Markus, Tal Z.

AU - Cohen, Sidney R.

AU - Vager, Zeev

AU - Gutierrez, Rafael

AU - Naaman, Ron

PY - 2011/11/9

Y1 - 2011/11/9

N2 - Spin-based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. Most of the development in spintronics is currently based on inorganic materials. Despite the fact that the magnetoresistance effect has been observed in organic materials, until now spin selectivity of organic based spintronics devices originated from an inorganic ferromagnetic electrode and was not determined by the organic molecules themselves. Here we show that conduction through double-stranded DNA oligomers is spin selective, demonstrating a true organic spin filter. The selectivity exceeds that of any known system at room temperature. The spin dependent resistivity indicates that the effect cannot result solely from the atomic spin-orbit coupling and must relate to a special property resulting from the chirality symmetry. The results may reflect on the importance of spin in determining electron transfer rates through biological systems.

AB - Spin-based properties, applications, and devices are commonly related to magnetic effects and to magnetic materials. Most of the development in spintronics is currently based on inorganic materials. Despite the fact that the magnetoresistance effect has been observed in organic materials, until now spin selectivity of organic based spintronics devices originated from an inorganic ferromagnetic electrode and was not determined by the organic molecules themselves. Here we show that conduction through double-stranded DNA oligomers is spin selective, demonstrating a true organic spin filter. The selectivity exceeds that of any known system at room temperature. The spin dependent resistivity indicates that the effect cannot result solely from the atomic spin-orbit coupling and must relate to a special property resulting from the chirality symmetry. The results may reflect on the importance of spin in determining electron transfer rates through biological systems.

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DO - 10.1021/nl2021637

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SN - 1530-6984

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JO - Nano Letters

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Spin specific electron conduction through DNA oligomers

Abstract

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