Field induced oxidation of silicon by SPM: Study of themechanism at negative sample voltage by STM, ESTMand AFM

G. Abadal; F. Pérez-Murano; N. Barniol; X. Aymerich

doi:10.1007/s003390051244

Field induced oxidation of silicon by SPM: Study of themechanism at negative sample voltage by STM, ESTMand AFM

G. Abadal, F. Pérez-Murano, N. Barniol, X. Aymerich

Research output: Contribution to journal › Article › Research › peer-review

34 Citations (Scopus)

Abstract

Nanometer scale oxidation of silicon surfaces by STM and AFM is an important subject in the SPM community, and its application for nanofabrication has been demonstrated by several groups.Most published work show that the surface can only be oxidized if a positive sample voltage is applied to the sample with respect to the tip (anodization). In the present work we have studied the oxidation mechanism at negative sample voltage with STM and AFM in air and with an electrochemical STM in HF solution. It is demonstrated that two oxidation mechanisms exist, and that the frontier between both oxidation mechanisms is the voltage at which the surface is in the flat band condition. The influence of the electrical field is evaluated and a mechanism for the cathodic oxidation is proposed. © 1998 Springer-Verlag.

Original language	English
Journal	Applied Physics A: Materials Science and Processing
Volume	66
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1007/s003390051244
Publication status	Published - 1 Dec 1998

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Abadal, G., Pérez-Murano, F., Barniol, N., & Aymerich, X. (1998). Field induced oxidation of silicon by SPM: Study of themechanism at negative sample voltage by STM, ESTMand AFM. Applied Physics A: Materials Science and Processing, 66(SUPPL. 1). https://doi.org/10.1007/s003390051244

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