Observation of possible topological in-gap surface states in the Kondo insulator SmB6 by photoemission
Observation of possible topological in-gap surface states in the Kondo insulator SmB6 by photoemission
Kondo insulators (KIs) are strongly correlated materials in which the interactions between 4f and conduction electrons lead to a hybridization gap opening at low temperature 1-2. SmB6 is a typical KI, but its resistivity does not diverge at low temperatures, which was attributed to some in-gap states 3-10. However after …