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Ultrafast light-driven simultaneous excitation of coherent terahertz magnons and phonons in multiferroic BiFeO3

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dc.contributor.author Khan, Pritam
dc.contributor.author Kanamaru, Masataka
dc.contributor.author Matsumoto, Keita
dc.contributor.author Ito, Toshimitsu
dc.contributor.author Satoh, Takuya
dc.date.accessioned 2020-04-20T14:05:14Z
dc.date.available 2020-04-20T14:05:14Z
dc.date.issued 2020
dc.identifier.uri http://hdl.handle.net/10344/8743
dc.description peer-reviewed en_US
dc.description.abstract The ultrafast switching of magnetization in multiferroic materials by a femtosecond laser could provide various advantages in photonics and magnonics. An efficient approach to control the light-matter interaction is the modulation of ultrafast coherent magnons and phonons in the high-frequency range. Spontaneous Raman andinfraredspectrarevealtheexcitationofmagnonsandopticalphononsinmultiferroicBiFeO3 inthesub-fewterahertz range. However, coherent control of such quasiparticles has not been achieved yet. In this study, we demonstrate that linearly polarized laser pulses simultaneously excite coherent magnons [out-of-plane ( ) and in-plane ( ) cyclone modes] and optical phonon (E mode) in BiFeO3. Experimental results in conjugation with phenomenological theory, by considering three uniformly distributed magnetic domains, reveal that impulsive stimulated Raman scattering is responsible for the generation of coherent magnons and phonons in BiFeO3. The observation of these terahertz magnon and optical phonon modes paves the way for the development of ultrafast magnetoelectro-optical devices. en_US
dc.language.iso eng en_US
dc.publisher American Physical Society en_US
dc.relation.ispartofseries Physical Review B;101, 134413
dc.relation.uri http://dx.doi.org/10.1103/PhysRevB.101.134413
dc.subject phontonics en_US
dc.title Ultrafast light-driven simultaneous excitation of coherent terahertz magnons and phonons in multiferroic BiFeO3 en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1103/PhysRevB.101.134413
dc.contributor.sponsor Japan Society for the Promotion of Science en_US
dc.relation.projectid JP15H05454 en_US
dc.relation.projectid JP16F16358 en_US
dc.relation.projectid JP19H01828 en_US
dc.relation.projectid JP19H05618 en_US
dc.relation.projectid JP19J21797 en_US
dc.relation.projectid JP19K21854 en_US
dc.relation.projectid JP26103004 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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