Korytar, Richard and Evers, Ferdinand (2023) Current-induced mechanical torque in chiral molecular rotors. BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 14. pp. 711-721. ISSN 2190-4286,
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There has been great endeavor to engineer molecular rotors operated by an electrical current. A frequently met operation principle is the transfer of angular momentum taken from the incident flux. In this paper, we present an alternative driving agent that works also in situations where angular momentum of the incoming flux is conserved. This situation arises typically with molecular rotors that exhibit an easy axis of rotation. For quantitative analysis we investigate here a classical model where molecule and wires are represented by a rigid curved path. We demonstrate that in the presence of chirality, the rotor generically undergoes a directed motion, provided that the incident current exceeds a threshold value. Above this threshold, the corresponding rotation frequency (per incoming particle current) for helical geometries turns out to be 2 & pi;m/M1, where m/M1 is the ratio of the mass of an incident charge carrier and the mass of the helix per winding number.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MOTORS; molecular junctions; molecular motors; molecular switches |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Ferdinand Evers |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Mar 2024 11:47 |
| Last Modified: | 14 Mar 2024 11:47 |
| URI: | https://pred.uni-regensburg.de/id/eprint/60099 |
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