Coexistence of Polaronic States and Superconductivity in Iron-Pnictide Compound Ba2Ti2Fe2As4O
Rong, LY; Shi, X; Richard, P; Sun, YL; Cao, GH; Zhang, XZ; Ma, JZ; Shi, M; Huang, YB; Qian, T; Ding, H; Tai, RZ
2018
发表期刊CHINESE PHYSICS LETTERS
ISSN0256-307X
卷号35期号:5页码:-
文章类型期刊论文
摘要The electronic structure of iron-pnictide compound superconductor Ba2Ti2Fe2As4O, which has metallic intermediate Ti2O layers, is studied using angle-resolved photoemission spectroscopy. The Ti-related bands show a 'peak-dip-hump' line shape with two branches of dispersion associated with the polaronic states at temperatures below around 120 K. This change in the spectra occurs along with the resistivity anomaly that was not clearly understood in a previous study. Moreover, an energy gap induced by the superconducting proximity effect opens in the polaronic bands at temperatures below T-c (similar to 21 K). Our study provides the spectroscopic evidence that superconductivity coexists with polarons in the same bands near the Fermi level, which provides a suitable platform to study interactions between charge, lattice and spin freedoms in a correlated system.
关键词Electron Liquid Density-wave Fese Films Thin-films Na(2)Ti(2)Pn(2)o Oxides Pn Sb
DOI10.1088/0256-307X/35/5/057401
收录类别SCI
语种英语
WOS记录号WOS:000432916300027
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28942
专题中科院上海应用物理研究所2011-2018年
作者单位1.Rong, LY
2.Shi, X
3.Richard, P
4.Sun, YL
5.Cao, GH
6.Zhang, XZ
7.Ma, JZ
8.Shi, M
9.Huang, YB
10.Qian, T
11.Ding, H
12.Tai, RZ
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GB/T 7714
Rong, LY,Shi, X,Richard, P,et al. Coexistence of Polaronic States and Superconductivity in Iron-Pnictide Compound Ba2Ti2Fe2As4O[J]. CHINESE PHYSICS LETTERS,2018,35(5):-.
APA Rong, LY.,Shi, X.,Richard, P.,Sun, YL.,Cao, GH.,...&Tai, RZ.(2018).Coexistence of Polaronic States and Superconductivity in Iron-Pnictide Compound Ba2Ti2Fe2As4O.CHINESE PHYSICS LETTERS,35(5),-.
MLA Rong, LY,et al."Coexistence of Polaronic States and Superconductivity in Iron-Pnictide Compound Ba2Ti2Fe2As4O".CHINESE PHYSICS LETTERS 35.5(2018):-.
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