Scanning tunneling microscopy (STM) has been used to study the surface atomic structure of the transition-metal trichalcogenides NbSe3 and orthorhombic TaS3 (o-TaS3). For NbSe3, two different types of atomic images are obtained. One of these clearly shows details of the known crystal structure, while the other suggests the presence of an additional adatom on the type-I chain. Although the detailed structure of o-TaS3 is not known, STM images provide evidence that it is more closely related to the ZrSe3 structure than that of NbSe3, as has previously been assumed.
ASJC Scopus subject areas
- Condensed Matter Physics