Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 문순재 | - |
dc.date.accessioned | 2022-04-15T00:34:51Z | - |
dc.date.available | 2022-04-15T00:34:51Z | - |
dc.date.issued | 2020-08 | - |
dc.identifier.citation | PHYSICAL REVIEW B, v. 102, no. 8, article no. 085138 | en_US |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.issn | 2469-9969 | - |
dc.identifier.uri | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.102.085138 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/170009 | - |
dc.description.abstract | In this work we investigate single crystal GdTiO3, a promising candidate material for Floquet engineering and magnetic control, using ultrafast optical pump-probe reflectivity and magneto-optical Kerr spectroscopy. GdTiO3 is a Mott-Hubbard insulator with a ferrimagnetic and orbitally ordered ground state (T-C = 32 K). We observe multiple signatures of the magnetic phase transition in the photoinduced reflectivity signal, in response to above band-gap 660-nm excitation. Magnetic dynamics measured via Kerr spectroscopy reveal optical perturbation of the ferrimagnetic order on spin-lattice coupling timescales, highlighting the competition between the Gd3+ and Ti3+ magnetic sub-lattices. Furthermore, a strong coherent oscillation is present in the reflection and Kerr dynamics, attributable to an acoustic strain wave launched by the pump pulse. The amplitude of this acoustic mode is highly dependent on the magnetic order of the system, growing sharply in magnitude at T-C, indicative of strong magneto-elastic coupling. The driving mechanism, involving strain-induced modification of the magnetic exchange interaction, implies an indirect method of coupling light to the magnetic degrees of freedom and emphasizes the potential of GdTiO3 as a tunable quantum material. | en_US |
dc.description.sponsorship | We thank L. Balents for helpful discussions and assistance with interpretation of the data. This work was supported primarily by ARO Award No. W911NF-16-1-0361 and additional support was provided by the W M. Keck Foundation (SDW). The MRL Shared Experimental Facilities used for sample characterization are supported by the MRSEC Program of the NSF under Award No. DMR 1720256; a member of the NSF-funded Materials Research Facilities Network. The work at HYU was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT and Future Planning (2019R1A2C1084237). | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER PHYSICAL SOC | en_US |
dc.subject | MAGNETIC PHASE-TRANSITION | en_US |
dc.subject | ULTRASONIC-ATTENUATION | en_US |
dc.subject | RTIO3 | en_US |
dc.subject | YTIO3 | en_US |
dc.subject | SYSTEMS | en_US |
dc.subject | OXIDES | en_US |
dc.subject | STATE | en_US |
dc.subject | FILMS | en_US |
dc.subject | TIME | en_US |
dc.title | Magnetoelastic coupling to coherent acoustic phonon modes in the ferrimagnetic insulator GdTiO3 | en_US |
dc.type | Article | en_US |
dc.relation.no | 8 | - |
dc.relation.volume | 102 | - |
dc.identifier.doi | 10.1103/PhysRevB.102.085138 | - |
dc.relation.page | 1-10 | - |
dc.relation.journal | PHYSICAL REVIEW B | - |
dc.contributor.googleauthor | Lovinger, D. J. | - |
dc.contributor.googleauthor | Zoghlin, E. | - |
dc.contributor.googleauthor | Kissin, P. | - |
dc.contributor.googleauthor | Ahn, G. | - |
dc.contributor.googleauthor | Ahadi, K. | - |
dc.contributor.googleauthor | Kim, P. | - |
dc.contributor.googleauthor | Poore, M. | - |
dc.contributor.googleauthor | Stemmer, S. | - |
dc.contributor.googleauthor | Moon, S. J. | - |
dc.contributor.googleauthor | Wilson, S. D. | - |
dc.relation.code | 2020052321 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | soonjmoon | - |
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