First Observation of the Si(111)-7×7↔1×1 Phase Transition by the Optical Second Harmonic Generation
- 1 April 1993
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 32 (4B), L610
- https://doi.org/10.1143/jjap.32.l610
Abstract
Temperature dependence of the second harmonic generation of the Si(111)-7×7 surface was measured in the temperature range from 550°C to 1100°C. For the first time Si(111)-7×7↔1×1 phase transition around 860°C was observed as an abrupt intensity change of the SH signal within 15 degrees using an optical technique. A hysteretic behavior with temperature difference of 2°C was observed in heating and cooling processes over the transition region. A gradual decrease of the SH intensity with temperature was also observed.Keywords
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