Cleaving-temperature dependence of layered-oxide surfaces

Y. Pennec, N. J.C. Ingle, I. S. Elfimov, E. Varene, Y. Maeno, A. Damascelli, J. V. Barth

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

The surfaces generated by cleaving nonpolar, two-dimensional oxides are often considered to be perfect or ideal. However, single particle spectroscopies on Sr2RuO4, an archetypal nonpolar two-dimensional oxide, show significant cleavage temperature dependence. We demonstrate that this is not a consequence of the intrinsic characteristics of the surface: lattice parameters and symmetries, step heights, atom positions, or density of states. Instead, we find a marked increase in the density of defects at the mesoscopic scale with increased cleave temperature. The potential generality of these defects to oxide surfaces may have broad consequences to interfacial control and the interpretation of surface sensitive measurements.

Original languageEnglish
Article number216103
JournalPhysical Review Letters
Volume101
Issue number21
DOIs
StatePublished - 21 Nov 2008
Externally publishedYes

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