000820051 001__ 820051 000820051 005__ 20230426083138.0 000820051 0247_ $$2doi$$a10.1103/PhysRevB.94.144432 000820051 0247_ $$2ISSN$$a0163-1829 000820051 0247_ $$2ISSN$$a0556-2805 000820051 0247_ $$2ISSN$$a1094-1622 000820051 0247_ $$2ISSN$$a1095-3795 000820051 0247_ $$2ISSN$$a1098-0121 000820051 0247_ $$2ISSN$$a1550-235X 000820051 0247_ $$2ISSN$$a2469-9950 000820051 0247_ $$2ISSN$$a2469-9969 000820051 0247_ $$2Handle$$a2128/12624 000820051 0247_ $$2WOS$$aWOS:000390348300010 000820051 0247_ $$2altmetric$$aaltmetric:10363304 000820051 037__ $$aFZJ-2016-05608 000820051 082__ $$a530 000820051 1001_ $$0P:(DE-Juel1)130643$$aFreimuth, Frank$$b0$$eCorresponding author 000820051 245__ $$aLaser-induced torques in metallic ferromagnets 000820051 260__ $$aWoodbury, NY$$bInst.$$c2016 000820051 3367_ $$2DRIVER$$aarticle 000820051 3367_ $$2DataCite$$aOutput Types/Journal article 000820051 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1521100515_16839 000820051 3367_ $$2BibTeX$$aARTICLE 000820051 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000820051 3367_ $$00$$2EndNote$$aJournal Article 000820051 520__ $$aWe study laser-induced torques in bcc Fe, hcp Co, and L10 FePt based on first-principles electronic structure calculations and the Keldysh nonequilibrium formalism. We find that the torques have two contributions, one from the inverse Faraday effect (IFE) and one from the optical spin-transfer torque (OSTT). Depending on the ferromagnet at hand and on the quasiparticle broadening the two contributions may be of similar magnitude, or one contribution may dominate over the other. Additionally, we determine the nonequilibrium spin polarization in order to investigate its relation to the torque. We find the torques and the perpendicular component of the nonequilibrium spin polarization to be odd in the helicity of the laser light, while the spin polarization that is induced parallel to the magnetization is helicity independent. The parallel component of the nonequilibrium spin polarization is orders of magnitude larger than the perpendicular component. 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