Current-induced mechanical torque in chiral molecular rotors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10468748" target="_blank" >RIV/00216208:11320/23:10468748 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=9SeH8Dd1N6" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=9SeH8Dd1N6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3762/bjnano.14.57" target="_blank" >10.3762/bjnano.14.57</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Current-induced mechanical torque in chiral molecular rotors

Popis výsledku v původním jazyce

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 &amp; 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.

Název v anglickém jazyce

Current-induced mechanical torque in chiral molecular rotors

Popis výsledku anglicky

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 &amp; 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA22-22419S" target="_blank" >GA22-22419S: Molekulární spintronika: řízení spin-orbitálních polí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Beilstein Journal of Nanotechnology

ISSN

2190-4286

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

červen

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

711-721

Kód UT WoS článku

001043230100001

EID výsledku v databázi Scopus

2-s2.0-85164538347