Semi-phenomenological Model for (4x1) to (8x""2"") Phase Transition on In-adsorbed Si(111) Surface

Yoichiro Yagi, Akio Yoshimori

An Indium adsorbed Si(111) (4×1) reconstructed surface seems to undergo a structural phase transition to (8ד2”) at approximately 130 K with decreasing temperature. On the basis of existing experimental and the first principles theoretical results, a simple semi-phenomenological model, using the Ising spin scheme, is presented for this surface system. Its analysis by Monte Carlo simulation shows that the model can account for this peculiar phase transition well.

Journal of the Physical Society of Japan

The Physical Society of Japan

3

74

831

834

10.1143/jpsj.74.831