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oai:docta.ucm.es:20.500.14352/727752023-08-26T23:38:26Zcom_20.500.14352_14col_20.500.14352_15

Spin-dependent polaron transport in helical molecules Barroso, M. Balduque, J. Domínguez-Adame Acosta, Francisco Díaz García, Elena 538.9 Electron transmission DNA Selectivity Charge Model Física de materiales Física del estado sólido 2211 Física del Estado Sólido ©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). 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. Ministerio de Ciencia e Innovación (MICINN) Depto. de Física de Materiales Fac. de Ciencias Físicas TRUE pub 2023-06-22T12:32:07Z 2023-06-22T12:32:07Z 2022-10-07 journal article https://hdl.handle.net/20.500.14352/72775 0003-6951 10.1063/5.0109240 eng PID2019-106820RB-C21 restricted access application/pdf American Institute of Physics