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강상관계 물질 연구단
강상관계 물질 연구단
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Ultrafast dynamics in the Lifshitz-type 5d pyrochlore antiferromagnet Cd2Os2O7

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Title
Ultrafast dynamics in the Lifshitz-type 5d pyrochlore antiferromagnet Cd2Os2O7
Author(s)
Inho Kwak; Min-Cheol Lee; Byung Cheol Park; Choong H. Kim; Bumjoo Lee; C. W. Seo; J. Yamaura; Z. Hiroi; Tae Won Noh; K. W. Kim
Publication Date
2019-10
Journal
PHYSICAL REVIEW B, v.100, no.14, pp.144309 -
Publisher
AMER PHYSICAL SOC
Abstract
We investigate the ultrafast dynamics of Cd2Os2O7, a prototype material showing a Lifshitz-type transition as a function of temperature. In the paramagnetic metallic state, the photoreflectivity shows a subpicosecond relaxation, followed by a featureless small offset. In the antiferromagnetic state slightly below T-N, however, the photoreflectivity resurges over hundreds of picoseconds, which goes beyond the usual realm of the effective-temperature model. Our observations are consistent with the Lifshitz phase transition of Cd2Os2O7 driven by the evolution of the local magnetic moment. ©2019 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/6571
ISSN
2469-9950
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
70595_Ultrafast dynamics in the Lifshitz-type 5d pyrochlore antiferromagnet Cd2Os2O7.pdfDownload

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