Gap-opening transition in Dirac semimetal ZrTe${}_5$

Yefan Tian, Nader Ghassemi, Joseph H. Ross

We apply ${}^{125}$Te nuclear magnetic resonance (NMR) spectroscopy to investigate the Dirac semimetal ZrTe${}_5$. With the NMR magnetic field parallel to the $b$-axis, we observe sign…