The Nature of CVC Nonlinearity in Low-Voltage Scanning Tunneling Spectroscopy of Semiconductors A.I. Loskutov, A.M. Mandel, E.E. Karpova, V.B. Oshurko, S.G. Veselko, A.A. Sharts and S.A. Loskutov EPJ Web Conf., 248 (2021) 01008 Published online: 26 April 2021 DOI: 10.1051/epjconf/202124801008