Observation of true c(8x2) symmetry in scanning tunnelling microscopy images of the clean InSb(001) surface
1996 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 350, no 1-3, L221-L226 p.Article in journal (Refereed) Published
Filled and empty state scanning tunnelling microscopy images of the sputtered and annealed InSb(001) surface are presented. The sputter-anneal preparation generates a surface with two distinct phases. The dominant phase possesses a unit cell with true c(8 x 2) symmetry, whereas the other phase is attributed to an asymmetric 1 x 3 reconstruction. The presence of a c(8 x 2) unit cell in filled state images is in contrast to previous reports, which identified only a 4 x 1 unit cell. The true c(8 x 2) symmetry further indicates, if the available structural model is used as a guide, that the current interpretation of features in filled state images is incorrect. This result may necessitate a reevaluation of the structural model for the InSb(001)-c(8 x 2) surface.
Place, publisher, year, edition, pages
1996. Vol. 350, no 1-3, L221-L226 p.
IdentifiersURN: urn:nbn:se:kth:diva-84208DOI: 10.1016/0039-6028(95)01343-1ISI: A1996UJ24500007OAI: oai:DiVA.org:kth-84208DiVA: diva2:499204
NR 201408052012-02-132012-02-132012-02-13Bibliographically approved