4f Crystal Field Ground State of the Strongly Correlated Topological Insulator SmB_{6}.
Phys Rev Lett
; 120(1): 016402, 2018 Jan 05.
Article
em En
| MEDLINE
| ID: mdl-29350947
ABSTRACT
We investigated the crystal-electric field ground state of the 4f manifold in the strongly correlated topological insulator SmB_{6} using core-level nonresonant inelastic x-ray scattering. The directional dependence of the scattering function that arises from higher multipole transitions establishes unambiguously that the Γ_{8} quartet state of the Sm f^{5} J=5/2 configuration governs the ground-state symmetry and, hence, the topological properties of SmB_{6}. Our findings contradict the results of density functional calculations reported so far.
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Bases de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Alemanha