Magneto-infrared spectroscopy of Landau levels and Zeeman splitting of three-dimensional massless Dirac Fermions in ZrTe${}_5$

R. Y. Chen, Z. G. Chen, X. -Y. Song +4

We present a magneto-infrared spectroscopy study on a newly identified three-dimensional (3D) Dirac semimetal ZrTe${}_5$. We observe clear transitions between Landau levels and their…