Interplay between indirect interaction and charge-density wave in Pb-adsorbed In(4x1)-Si(111)

TitleInterplay between indirect interaction and charge-density wave in Pb-adsorbed In(4x1)-Si(111)
Publication TypeJournal Article
Year of Publication2007
AuthorsHupalo M, Chan TL, Wang CZ, Ho KM, Tringides MC
Journal TitlePhysical Review B
Volume76
Pages045415
Date PublishedJul
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberISI:000248540000109
KeywordsSCANNING TUNNELING MICROSCOPE, spin, surface
Abstract

The response of the electronic structure of the quasi-one-dimensional In(4x1)-Si(111) surface to the adsorption of Pb atoms is investigated by scanning tunneling microscopy and first-principles calculations. Instead of a period of even multiples of the underlying In lattice spacing a along the In wire, as favored by the low temperature charge-density wave (CDW) modulation, the Pb adatoms are frequently found to occupy the odd adsorption sites separated by a distance 3a or 5a. These observations indicate a strong antiphase interference between the indirect interaction of adsorbed Pb atoms and the intrinsic CDW of the In(4x1)-Si(111) surface.

DOI10.1103/PhysRevB.76.045415
Alternate JournalPhys. Rev. B