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Existence of Chern Gaps in Kagome Magnets RMn₆Ge₆ (R = Nd, Sm, Tb, Dy, Ho, Er, Yb, Lu)

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arxiv 2203.09447 v1 pith:SYHV6S76 submitted 2022-03-17 cond-mat.str-el

Existence of Chern Gaps in Kagome Magnets RMn$_6$Ge$_6$ (R = Nd, Sm, Tb, Dy, Ho, Er, Yb, Lu)

classification cond-mat.str-el
keywords chernkagomebandsgapshostmagneticmagnetsthey
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abstract

Kagome Chern Magnets are lattices which host a Chern state when they are non-magnetic and a Chern Gap when they become magnetic. These Chern gaps can host fractional Chern Fermions. There has been extensive research in the RMn$_6$Sn$_6$ system which hosts a small Chern gap with many trivial bands surrounding them. RMn$_6$Ge$_6$ is studied theoretically in order to find a more insulating Kagome magnetic with fewer bands near the Chern gap.

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