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ID 31967
file
creator
Zhou, Bo
Xu, Min
Zhang, Yan
Xu, Gang
He, Cheng
Yang, L. X.
Chen, Fei
Xie, B. P.
Cui, Xiao-Yu
Arita, Masashi
Dai, X.
Feng, D. L.
NDC
Physics
abstract
BaNi_2As_2, with a first-order phase transition around 131 K, is studied by the angle-resolved photoemission spectroscopy. The measured electronic structure is compared to the local-density approximation calculations, revealing similar large electronlike bands around M^^- and differences along Г^^- -X^^-. We further show that the electronic structure of BaNi_2As_2 is distinct from that of the sibling iron pnictides. Particularly, there is no signature of band folding, indicating no collinear spin-density-wave-related magnetic ordering. Moreover, across the strong first-order phase transition, the band shift exhibits a hysteresis, which is directly related to the significant lattice distortion in BaNi_2As_2.
journal title
Physical Review B
volume
Volume 83
issue
Issue 3
start page
035110-1
end page
035110-8
date of issued
2011-01-13
publisher
The American Physical Society
issn
1098-0121
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2011 The American Physical Society
relation url
department
Hiroshima Synchrotron Radiation Center