Electronic structure of a nodal line semimetal candidate TbSbTe

Journal Article · Thu Jun 05 00:00:00 EDT 2025 · Physical Review Materials

DOI:https://doi.org/10.1103/PhysRevMaterials.9.064202· OSTI ID:2583958

Elius, Iftakhar Bin ^[1]; Casey, Jacob F. ^[2]; Regmi, Sabin ^[3]; Buturlim, Volodymyr ^[4]; Sakhya, Anup Pradhan ^[1]; Sprague, Milo ^[1]; Mondal, Mazharul Islam ^[1]; Valadez, Nathan ^[1]; Kumay, Arun K. ^[1]; Scrivens, Justin ^[1]; Venkateswara, Yenugonda ^[2]; Dan, Shovan ^[5]; Romanova, Tetiana ^[5]; Pathak, Arjun K ^[2]; Gofryk, Krzysztof ^[4]; Ptok, Andrzej ^[6]; Kaczorowski, Dariusz ^[5]; Neupane, Madhab ^[1]

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1. University of Central Florida, Orlando, FL (United States)
2. SUNY Buffalo State, NY (United States)
3. University of Central Florida, Orlando, FL (United States); Idaho National Laboratory (INL), Idaho Falls, ID (United States)
4. Idaho National Laboratory (INL), Idaho Falls, ID (United States)
5. Polish Academy of Sciences, Wrocław (Poland)
6. Polish Academy of Sciences, Krakow (Poland)

The 𝐿⁢𝑛⁢SbTe (𝐿⁢𝑛 = Lanthanides) family, like isostructural ZrSiS-type compounds, has emerged as a fertile playground for exploring the interaction of electronic correlations and magnetic ordering with the nodal line band topology. Here, we report on a detailed electronic band structure investigation of TbSbTe, corroborated by electrical transport, thermodynamic, and magnetic studies. Temperature-dependent magnetic susceptibility and thermodynamic transport studies indicate the onset of antiferromagnetic ordering below 𝑇_𝑁 ∼ 5.8K. The electronic band structure study, carried out with high-resolution angle-resolved photoemission spectroscopy measurements aided with density functional theory–based first-principles calculations reveal presence of a nonsymmorphic symmetry-protected Dirac crossing in the Γ-X high-symmetry (HS) direction, which is part of a nodal line along the X-R HS direction. Another Dirac crossing occurs along the Γ-X direction at a relatively higher binding energy, which occurs from $$\tilde{𝒞}$$_2⁢𝜈⁢𝒫 symmetry which is gapped in the theoretical calculations with the effect of spin-orbit coupling considered. Parallel to this direction, our theoretical calculations and experimental results exhibit strongly momentum-dependent surface bands. In this study, we open an avenue to further uncover the intricate interplay among symmetry-protected topological band structure, spin-orbit coupling, and magnetism in this material and the 𝐿⁢𝑛⁢SbTe family, in general.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: National Science Foundation (NSF); Air Force Office of Scientific Research (AFOSR); National Science Centre (Poland); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
• Grant/Contract Number: AC02-05CH11231; AC07-05ID14517
• OSTI ID: 2583958
• Report Number(s): INL/JOU--24-78474-Revision-0
• Journal Information: Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 6 Vol. 9; ISSN 2475-9953
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

Angle-resolved photoemission spectroscopy
Density of states
Edge states
Electronic structure
Fermi surface
Nodal-line semimetals