Non-locality and single meta-atom spectroscopy in THz Landau polaritons Giacomo Scalari, Shima Rajabali, Elsa Jöchl, Sergej Markmann, Simone de Liberato, Erika Cortese, Mattias Beck and Jérôme Faist EPJ Web Conf., 266 (2022) 08013 Published online: 13 October 2022 DOI: 10.1051/epjconf/202226608013