Artem G. Volosniev, Abhishek Shiva Kumar, Dusan Lorenc, Younes Ashourishokri, Ayan A. Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev
Phys. Rev. B 107, 125201 (2023) – Published 6 March 2023
Konrad J. Kapcia, Victor Tkachenko, Flavio Capotondi, Alexander Lichtenstein, Serguei Molodtsov, Leonard Mueller, Andre Philippi-Kobs, Przemysław Piekarz, and Beata Ziaja
Phys. Rev. B 107, 094402 (2023) – Published 3 March 2023
Eleanor F. Scott, Katherine A. Schlaak, Poulomi Chakraborty, Chenguang Fu, Satya N. Guin, Safa Khodabakhsh, Ashley E. Paz y Puente, Claudia Felser, Brian Skinner, and Sarah J. Watzman
Phys. Rev. B 107, 115108 (2023) – Published 3 March 2023
Seungho Seong, J. D. Denlinger, Kyoo Kim, B. I. Min, Y. Ōnuki, and J.-S. Kang
Phys. Rev. B 107, 125109 (2023) – Published 3 March 2023
The electronic structure of CeNiSn, a potential topological Kondo insulator and a Dirac nodal-loop semimetal, is investigated here employing temperature-dependent angle-resolved photoemission spectroscopy (ARPES). Dispersive states crossing the Fermi level () exhibit general agreement with theoretical predictions of bulk Ni 3 bands and show consistency with a topological hourglass-type crossing of bulk bands below . Flat Ce 4 states at exhibit a Kondo resonance temperature dependence consistent with bulk transport. This work demonstrates the importance of coherent Kondo states in determining the topological properties of CeNiSn.