Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 윤석현 | * |
dc.date.accessioned | 2018-12-31T16:30:20Z | - |
dc.date.available | 2018-12-31T16:30:20Z | - |
dc.date.issued | 2018 | * |
dc.identifier.issn | 2469-9950 | * |
dc.identifier.issn | 2469-9969 | * |
dc.identifier.other | OAK-23563 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/247993 | - |
dc.description.abstract | We employ an optical pump-probe technique to study coherent phonon oscillations in Ca2RuO4. We find that oscillation amplitude of an A(g) symmetric phonon mode is strongly suppressed at 260 K, a putative transition point of orbital ordering. The oscillation also shows a gradual but huge change in its phase, such that the oscillation even flips over with a 180. change across the temperature. Density functional theory calculations indicate that the Ag phonon has an eigenmode of octahedral distortion with conventional tilting along the a axis and antipolar distortion of apical oxygen. Careful inspection of the lattice captures an unusually large antipolar distortion in low-temperature structures, which may play a crucial role for the phase transition at 260 K. | * |
dc.language | English | * |
dc.publisher | AMER PHYSICAL SOC | * |
dc.title | Abnormal phase flip in the coherent phonon oscillations of Ca2RuO4 | * |
dc.type | Article | * |
dc.relation.issue | 16 | * |
dc.relation.volume | 98 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | PHYSICAL REVIEW B | * |
dc.identifier.doi | 10.1103/PhysRevB.98.161115 | * |
dc.identifier.wosid | WOS:000447485700003 | * |
dc.identifier.scopusid | 2-s2.0-85055093653 | * |
dc.author.google | Lee, Min-Cheol | * |
dc.author.google | Kim, Choong H. | * |
dc.author.google | Kwak, Inho | * |
dc.author.google | Kim, J. | * |
dc.author.google | Yoon, S. | * |
dc.author.google | Park, Byung Cheol | * |
dc.author.google | Lee, Bumjoo | * |
dc.author.google | Nakamura, F. | * |
dc.author.google | Sow, C. | * |
dc.author.google | Maeno, Y. | * |
dc.author.google | Noh, T. W. | * |
dc.author.google | Kim, K. W. | * |
dc.contributor.scopusid | 윤석현(55732105900) | * |
dc.date.modifydate | 20231120162901 | * |