Optical conductivity and resistivity in a four-band model for ZrTe$_5$ from ab-initio calculations
Corentin Morice,
Elias Lettl,
Thilo Kopp
et al.
Abstract:ZrTe5 is considered a potential candidate for either a Dirac semimetal or a topological insulator in close proximity to a topological phase transition. Recent optical conductivity results motivated a two-band model with a conical dispersion in 2D, in contrast to density functional theory calculations. Here, we reconcile the two by deriving a four-band model for ZrTe5 using k • p theory, and fitting its parameters to the ab-initio band structure. The optical conductivity with an adjusted electronic structure ma… Show more
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