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Controlling magnetism with light in zero orbital angular momentum antiferromagnet

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Controlling magnetism with light in zero orbital angular momentum antiferromagnet

dc.contributor.author	Matthiesen, Mattias
dc.contributor.author	Hortensius, Jorrit R.
dc.contributor.author	Mañas Valero, Samuel
dc.contributor.author	Siskins, Makars
dc.contributor.author	Ivanov, Boris A.
dc.contributor.author	Van der Zant, H. S. J.
dc.contributor.author	Coronado Miralles, Eugenio
dc.contributor.author	Afanasiev, Dmytro
dc.contributor.author	Caviglia, Andrea D.
dc.date.accessioned	2023-03-07T12:51:25Z
dc.date.available	2023-03-07T12:51:25Z
dc.date.issued	2023
dc.identifier.citation	Matthiesen, Mattias Hortensius, Jorrit R. Mañas Valero, Samuel Siskins, Makars Ivanov, Boris A. Van der Zant, H.S.J. Coronado Miralles, Eugenio Afanasiev, Dmytro Caviglia, Andrea D. 2023 Controlling magnetism with light in zero orbital angular momentum antiferromagnet Physical Review Letters 130 076702 1 6
dc.identifier.uri	https://hdl.handle.net/10550/85700
dc.description.abstract	Antiferromagnetic materials feature intrinsic ultrafast spin dynamics, making them ideal candidates for future magnonic devices operating at THz frequencies. A major focus of current research is the investigation of optical methods for the efficient generation of coherent magnons in antiferromagnetic insulators. In magnetic lattices endowed with orbital angular momentum, spin-orbit coupling enables spin dynamics through the resonant excitation of low-energy electric dipoles such as phonons and orbital resonances which interact with spins. However, in magnetic systems with zero orbital angular momentum, microscopic pathways for the resonant and low-energy optical excitation of coherent spin dynamics are lacking. Here, we consider experimentally the relative merits of electronic and vibrational excitations for the optical control of zero orbital angular momentum magnets, focusing on a limit case: the antiferromagnet manganese phosphorous trisulfide (MnPS3), constituted by orbital singlet Mn2þ ions. We study the correlation of spins with two types of excitations within its band gap: a bound electron orbital excitation from the singlet orbital ground state of Mn2þ into an orbital triplet state, which causes coherent spin precession, and a vibrational excitation of the crystal field that causes thermal spin disorder. Our findings cast orbital transitions as key targets for magnetic control in insulators constituted by magnetic centers of zero orbital angular momentum.
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 2023, vol. 130, num. 076702, p. 1-6
dc.subject	Química organometàl·lica
dc.subject	Materials
dc.title	Controlling magnetism with light in zero orbital angular momentum antiferromagnet
dc.type	journal article	es_ES
dc.date.updated	2023-03-07T12:51:25Z
dc.identifier.doi	10.1103/PhysRevLett.130.076702
dc.identifier.idgrec	156955
dc.rights.accessRights	open access	es_ES