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Rotation of reflectivity anisotropy due to uniaxial strain along [110](tetr) in the electron-doped Fe-based superconductor Ba(Fe0.955Co0.045)(2)As-2

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Title
Rotation of reflectivity anisotropy due to uniaxial strain along [110](tetr) in the electron-doped Fe-based superconductor Ba(Fe0.955Co0.045)(2)As-2
Author(s)
Inho Kwak; Soonsang Huh; Min-Cheol Lee; Younsik Kim; Bumjoo Lee; Y. S. Lee; C. W. Seo; Byung Cheol Park; Thomas Wolf; Changyoung Kim; Tae Won Noh; K. W. Kim
Subject
IRON, ; NEMATICITY
Publication Date
2020-04
Journal
PHYSICAL REVIEW B, v.101, no.16, pp.165136
Publisher
AMER PHYSICAL SOC
Abstract
©2020 American Physical Society. We present a strain-dependent time-resolved reflectometry experiment on Ba(Fe0.955Co0.045)(2)As-2 in the nematic state. Uniaxial external pressure has usually been applied to obtain a single nematic domain. However, reflectivity with and without pumping under uniaxial strain along [110](tetr) reveals an unexpected nematicity of which C-4 symmetry-breaking orientation is rotated by 20 degrees. Our observation suggests a microscopic coexistence of B-2g and B-1g nematicity under uniaxial strain and possibly of an XY-type nematic order in the electron-doped iron pnictide
URI
https://pr.ibs.re.kr/handle/8788114/8661
DOI
10.1103/PhysRevB.101.165136
ISSN
2469-9950
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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