Spin polarization and spin separation realized in the double-helical molecules

We investigate the electron transport through one double-helical molecule with four terminals, by considering one terminal to be the source and others to be the drains. It is found that notable spin polarizations simultaneously occur during the processes of intra-chain electron tunneling and inter-c...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2015-11, Vol.74, p.156-159
Main Authors: Wu, Hai-Na, Zhu, Yu-Lian, Sun, Xue, Gong, Wei-Jiang
Format: Article
Language:English
Subjects:
Double-helical molecules
Electron transport
Spin polarization
Spin separation
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Summary:We investigate the electron transport through one double-helical molecule with four terminals, by considering one terminal to be the source and others to be the drains. It is found that notable spin polarizations simultaneously occur during the processes of intra-chain electron tunneling and inter-chain electron reflection. More importantly, in these two processes, the spin polarizations always show similar strengths and opposite directions. Based on these results, we consider that the spin polarization and spin separation can be co-realized in this system. •Transport in one four-terminal double-helical molecule is studied.•Spin polarizations occur in intra-chain electron tunneling and inter-chain reflection.•In the two processes, spin polarizations show similar strengths and opposite directions.•Spin polarization and spin separation can be co-realized in this system.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2015.07.005