TY - JOUR
T1 - Observation of Dirac nodal line states in topological semimetal candidate PrSbTe
AU - Yuan, Dengpeng
AU - Huang, Dajian
AU - Ma, Xin
AU - Chen, Xu
AU - Ren, Huifen
AU - Zhang, Yun
AU - Feng, Wei
AU - Zhu, Xiegang
AU - Wang, Bo
AU - He, Xuwen
AU - Wu, Jian
AU - Tan, Shiyong
AU - Hao, Qunqing
AU - Zhang, Qiang
AU - Liu, Yi
AU - Liu, Qin
AU - Liu, Zhengtai
AU - Cao, Chao
AU - Chen, Qiuyun
AU - Lai, Xinchun
N1 - Publisher Copyright:
© 2024 American Physical Society.
PY - 2024/1/15
Y1 - 2024/1/15
N2 - The interplay among topology, crystal symmetry, magnetic order, and strong electron correlation can give rise to a plethora of exotic physical phenomena. The ZrSiS family is known as typical topological Dirac semimetals, among them LnSbTe (Ln denotes lanthanide) compounds exhibit intriguing characteristics due to the presence of Ln 4f electrons, resulting in quantum states and unique properties. In this paper, the topological electronic structure of PrSbTe is systematically studied by angle-resolved photoemission spectroscopy (ARPES), combined with magnetic, specific heat measurements, and band structure calculations. The detailed three-dimensional electronic structure of PrSbTe has been obtained, and a diamond-shaped Fermi surface and multiple Dirac nodal lines have been observed, which are in remarkable agreement with theoretical calculations. Moreover, the 4f electrons in PrSbTe are rather localized, which can be revealed by on-resonant ARPES data and further confirmed by the rather small Sommerfeld coefficient of γ=2.6231mJ/molK2. Our results provide more detailed information about the LnSbTe family, which gives a deeper understanding of the interaction between Ln 4f electrons and the topological states.
AB - The interplay among topology, crystal symmetry, magnetic order, and strong electron correlation can give rise to a plethora of exotic physical phenomena. The ZrSiS family is known as typical topological Dirac semimetals, among them LnSbTe (Ln denotes lanthanide) compounds exhibit intriguing characteristics due to the presence of Ln 4f electrons, resulting in quantum states and unique properties. In this paper, the topological electronic structure of PrSbTe is systematically studied by angle-resolved photoemission spectroscopy (ARPES), combined with magnetic, specific heat measurements, and band structure calculations. The detailed three-dimensional electronic structure of PrSbTe has been obtained, and a diamond-shaped Fermi surface and multiple Dirac nodal lines have been observed, which are in remarkable agreement with theoretical calculations. Moreover, the 4f electrons in PrSbTe are rather localized, which can be revealed by on-resonant ARPES data and further confirmed by the rather small Sommerfeld coefficient of γ=2.6231mJ/molK2. Our results provide more detailed information about the LnSbTe family, which gives a deeper understanding of the interaction between Ln 4f electrons and the topological states.
UR - http://www.scopus.com/inward/record.url?scp=85183119657&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.109.045113
DO - 10.1103/PhysRevB.109.045113
M3 - Article
AN - SCOPUS:85183119657
SN - 2469-9950
VL - 109
JO - Physical Review B
JF - Physical Review B
IS - 4
M1 - 045113
ER -