Electronic structure in a rare-earth based nodal-line semimetal candidate PrSbTe
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- Univ. of Central Florida, Orlando, FL (United States); Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Univ. of Central Florida, Orlando, FL (United States)
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Polish Academy of Sciences (PAS), Wrocław (Poland)
- Polish Academy of Sciences (PAS), Krakow (Poland)
Nodal-line semimetals feature topologically protected band crossings between the bulk valence and conduction bands that extend along a finite dimension in the form of a line or a loop. While ZrSiS and similar materials have attracted extensive research as hosts for the nodal-line semimetallic phase, an alternative avenue has emerged in the form of isostructural rare-earth (RE)-based RESbTe materials. Such systems possess intriguing potentialities for harboring elements of magnetic ordering and electronic correlations owing to the presence of 4f electrons intrinsic to the RE elements. In this study, we have carried out angle-resolved photoemission spectroscopy (ARPES) and thermodynamic measurements in conjunction with first-principles computations on PrSbTe to elucidate its electronic structure and topological characteristics. Magnetic and thermal characterizations indicate the presence of well-localized 4f states with the absence of any discernible phase transition down to 2 K. The ARPES results reveal the presence of gapless Dirac crossings that correspond to a nodal-line along the X-R direction in the three-dimensional Brillouin zone. Furthermore, Dirac crossing that makes up the nodal line, which forms a diamond-shaped nodal plane centered at the center of the Brillouin zone, is also identified within the experimental resolution. In conclusion, this study on the electronic structure of PrSbTe contributes to the understanding of the pivotal role played by spin-orbit coupling in the context of the RESbTe family of materials.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Laboratory Directed Research and Development (LDRD) Program; US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); National Science Centre (NCN); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC07-05ID14517; FA9550-20-1-0322; DMR-1847962; 2021/41/B/ST3/01141; AC02-05CH11231; AC02-76SF00515
- OSTI ID:
- 2337620
- Alternate ID(s):
- OSTI ID: 2473912
- Report Number(s):
- INL/JOU-23-75658-Rev000; TRN: US2410364
- Journal Information:
- Physical Review Materials, Vol. 8, Issue 4; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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