Spin-dependent polaron transport in helical molecules



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Barroso, M. and Balduque, J. and Domínguez-Adame Acosta, Francisco and Díaz García, Elena (2022) Spin-dependent polaron transport in helical molecules. Applied physics letters, 121 (14). ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/5.0109240


We study thermal effects on spin transport along a deformable helical molecule in the presence of chiral-induced spin-orbit coupling. The carrier-lattice interaction is modeled by the well-established Peyrard-Bishop-Holstein model within the Langevin approach to include temperature as a stochastic noise. The carrier-lattice interaction causes the occurrence of polaron states in the molecule. We demonstrate the existence of two well-differentiated spin-dependent polaron transport regimes as a function of temperature. In the low-temperature regime, the spatial separation of the two spin-dependent polaron wave-packets results in a nonzero spin current. On the contrary, the spin current becomes negligible if the temperature of the system is high enough. Finally, we characterize this transition and estimate the critical temperature at which it takes place.

Item Type:Article
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©2022 The Author(s)
The authors thank R. P. A. Lima for helpful discussions. This research has been supported by Ministerio de Ciencia e Innovacion (Grant No. PID2019-106820RB-C21).

Uncontrolled Keywords:Electron transmission; DNA; Selectivity; Charge; Model
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:75946
Deposited On:21 Dec 2022 17:40
Last Modified:21 Dec 2022 17:40

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