Experimental observation of the optical spin-orbit torque

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173369" target="_blank" >RIV/00216208:11320/13:10173369 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/13:00397427

Result on the web

<a href="http://dx.doi.org/10.1038/NPHOTON.2013.76" target="_blank" >http://dx.doi.org/10.1038/NPHOTON.2013.76</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/NPHOTON.2013.76" target="_blank" >10.1038/NPHOTON.2013.76</a>

Result language

angličtina

Original language name

Experimental observation of the optical spin-orbit torque

Original language description

Electrical and optical control of magnetization are of central importance in the research and applications of spintronics. Non-relativistic angular momentum transfer or relativistic spin-orbit coupling provide efficient means by which electrical currentdriven through a ferromagnet can exert a torque on the magnetization. Ferromagnetic semiconductors like (Ga, Mn) As are suitable model systems with which to search for optical counterparts of these phenomena, where photocarriers excited by a laser pulseexert torque upon magnetization. Here, we report the observation of an optical spin-orbit torque (OSOT) in (Ga, Mn) As. The phenomenon originates from spin-orbit coupling of non-equilibrium photocarriers excitated by helicity-independent pump laser pulses, which do not impart angular momentum. In our measurements of the time-dependent magnetization trajectories, the signatures of OSOT are clearly distinct from the competing thermal excitation mechanism, and OSOT can even dominate in (Ga,

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2013

Confidentiality

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

Name of the periodical

Nature Photonics

ISSN

1749-4885

e-ISSN

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Volume of the periodical

7

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

493-499

UT code for WoS article

000319653500018

EID of the result in the Scopus database

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