Surface states of lead selenide crystals
Kazantsev D. V. , Selivanov Yu. G. , Trofimov V. T. , Chizhevskii E. G.
An image of a section of a surface on a (100) cleavage surface of a PbSe single crystal, grown by the free-growth method, was obtained with atomic resolution by the method of scanning tunneling microscopy in the tunneling current stabilization regime. The density of states, measured near the band edges, indicates that the Fermi level is pinned on the surface of the crystal. © 1995 American Institute of Physics.