Spin-polarized electron transmission in dna-like systems



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Sierra, Miguel A. and Sánchez, David and Gutiérrez, Rafael and Cuniberti, Gianaurelio and Domínguez-Adame Acosta, Francisco and Díaz García, Elena (2020) Spin-polarized electron transmission in dna-like systems. Biomolecules, 10 (1). ISSN 2218-273X

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Official URL: http://dx.doi.org/10.3390/biom10010049


The helical distribution of the electronic density in chiral molecules, such as DNA and bacteriorhodopsin, has been suggested to induce a spin-orbit coupling interaction that may lead to the so-called chirality-induced spin selectivity (CISS) effect. Key ingredients for the theoretical modelling are, in this context, the helically shaped potential of the molecule and, concomitantly, a Rashba-like spin-orbit coupling due to the appearance of a magnetic field in the electron reference frame. Symmetries of these models clearly play a crucial role in explaining the observed effect, but a thorough analysis has been largely ignored in the literature. In this work, we present a study of these symmetries and how they can be exploited to enhance chiral-induced spin selectivity in helical molecular systems.

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©2020 MDPI
This research was funded by the Spanish Ministry of Science, Innovation and Universities, Grant Nos. MAT2016-75955 and MAT2017-82639. R.G. and G.C. acknowledge financial support from the Volkswagen Stiftung (Grant No. 88366). This work was partly supported by the German Research Foundation (DFG) within the Cluster of Excellence "Center for Advancing Electronics Dresden". M.A.S. acknowledges financial support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), Project-id No. 258499086-SFB1170 "ToCoTronics", the Free State of Bavaria (Elitenetzwerk Bayern IDK "Topologische Isolatoren") and the Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter-ct.qmat(EXC 2147, Grant No. 39085490).

Uncontrolled Keywords:Chirality; Selectivity; Chirality-induced spin selectivity; Helical molecules; Spin transport; Spin polarization; DNA electronic transport
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:59525
Deposited On:18 Mar 2020 18:28
Last Modified:18 Mar 2020 18:28

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