In close collabortaion with the groups of Christoph Lange (TU Dortmund) and Sergey Ganichev (UR), we were able to use contact-free broadband THz magneto-spectroscopy to map the Dirac cone of buried HgTe quantum wells with sub-meV precision, revealing small band gaps and the onset of relativistic Landau quantization.

The results have been published in Applied Physics Letters (external link, opens in a new window).