By employing the nonequilibrium Green's function technique, we study the thermal-induced spin-Seebeck transport through a chiral double-stranded DNA (dsDNA) connected to a normal-metal and a ferromagnetic lead. How the main parameters of the dsDNA-based system influence the spin-Seebeck transport is analyzed at length, and the thermally created charge (spin-related) current displays the rectification effect and the negative differential thermal conductance feature. More importantly, the spin current exhibits the rectification behavior of the spin-Seebeck effect; even the perfect spin-Seebeck effect can be obtained with the null charge current. Thus, the chiral dsDNA-based system can act as a spin(charge)-Seebeck diode, spin(charge)-Seebeck switch, and spin(charge)-Seebeck transistor. Our results provide new ways to design spin caloritronic devices based on dsDNA or other organic molecules.
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Thermally driven spin-Seebeck transport in chiral dsDNA-based molecular devices
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7 March 2018
Research Article|
March 06 2018
Thermally driven spin-Seebeck transport in chiral dsDNA-based molecular devices
L. L. Nian;
L. L. Nian
School of Physical Science and Technology, China University of Mining and Technology
, Xuzhou 221116, China
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Rong Zhang;
Rong Zhang
School of Physical Science and Technology, China University of Mining and Technology
, Xuzhou 221116, China
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F. R. Tang;
F. R. Tang
School of Physical Science and Technology, China University of Mining and Technology
, Xuzhou 221116, China
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Jun Tang;
Jun Tang
School of Physical Science and Technology, China University of Mining and Technology
, Xuzhou 221116, China
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a)
Electronic mail: bailong2200@163.com
J. Appl. Phys. 123, 094302 (2018)
Article history
Received:
December 16 2017
Accepted:
February 03 2018
Citation
L. L. Nian, Rong Zhang, F. R. Tang, Jun Tang, Long Bai; Thermally driven spin-Seebeck transport in chiral dsDNA-based molecular devices. J. Appl. Phys. 7 March 2018; 123 (9): 094302. https://doi.org/10.1063/1.5019753
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