TITLE

Tuning the termination of the SrTiO3(110) surface by Ar+ sputtering

AUTHOR(S)
Zhiming Wang; Kehui Wu; Qinlin Guo; Jiandong Guo
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p021912
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report a scanning tunneling microscopy study on the SrTiO3(110) surface treated with Ar+ sputtering followed by annealing. Two types of termination coexist on the surface, which are spatially identified as the 4×1 reconstructed SrTiO layer and the O layer covered by Ti-rich oxide clusters, respectively. The relative areal ratio of the two types is tuned by sputtering dose reproducibly, and monophased surface with either SrTiO or O termination is obtained. The surface is stable at temperatures up to 1100 °C and under oxygen partial pressures from 6×10-5 mbar to ultra high vacuum, providing us a flexible epitaxial growth template.
ACCESSION #
43277335

 

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