Sn. Magonov et al., CHARACTERIZATION OF SURFACE-DEFECTS IN BEDT-TTF SALTS BY SCANNING-TUNNELING-MICROSCOPY, Synthetic metals, 56(1), 1993, pp. 2222-2227
Various defects, registered by scanning tunneling microscopy (STM) on
surfaces of single crystals of different bis(ethylenedithio)tetrathiaf
ulvalene, BEDT-TTF, salts are characterized. In the large scales (up t
o 100X100 mu2) microcracks and terraces, formed by multiple steps of s
urface layers are the dominating morphologic features. In the atomic-s
cale STM images the observed imperfections are mainly related with vac
ancies in the crystallographic ionic lattice. They are formed by misin
g cations or anions. Other types of defects such as crystal twinning a
nd linear dislocations have been also visualized.