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Advances in Condensed Matter Physics
Volume 2017, Article ID 2021510, 10 pages
Research Article

Profile of a Faceted Macrostep Caused by Anomalous Surface Tension

Faculty of Engineering, Osaka Electro-Communication University, Hatsu-cho, Neyagawa, Osaka 572-8530, Japan

Correspondence should be addressed to Noriko Akutsu;

Received 10 October 2016; Revised 3 December 2016; Accepted 5 December 2016; Published 5 January 2017

Academic Editor: Charles Rosenblatt

Copyright © 2017 Noriko Akutsu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The height profile of a macrostep on a vicinal surface near equilibrium is studied numerically using a restricted solid-on-solid model with a point-contact-type step-step attraction (p-RSOS model). We calculate the surface tension of vicinal surfaces around the (001) surface inclined towards the direction using the density-matrix-renormalization group method. We also calculate the height profiles of vicinal surfaces using the Monte Carlo method and study the connection between the height profile of the macrostep near equilibrium and the discontinuous surface tension. We find that the height profile of a macrostep on a vicinal surface near equilibrium can be classified depending on the zone in the faceting diagram where the system exists. We also find finite size effects both for the height profile and for the inhibition of the macrostep motion in the relaxation process to the equilibrium state.