Dual nature of localized phase defects in the In/Si(111) atomic wire array: impurities and short topological solitons
Materials Science
2020-12-02 v1 Pattern Formation and Solitons
Computational Physics
Abstract
We demonstrate the existence of atomically-sized topological solitons in a quasi one-dimensional charge density wave system: indium atomic wires on Si(111). Performing joint scanning tunneling microscopy and density-functional calculations, we show that the Si(111)-(8x2)In surface features two conceptually different types of abrupt phase flip structures. One is caused by In adatoms and is, hence, non-solitonic in nature. The other one is an abrupt left-chiral soliton.
Keywords
Cite
@article{arxiv.2012.00604,
title = {Dual nature of localized phase defects in the In/Si(111) atomic wire array: impurities and short topological solitons},
author = {Abdus Samad Razzaq and Sun Kyu Song and Tae-Hwan Kim and Han Woong Yeom and Stefan Wippermann},
journal= {arXiv preprint arXiv:2012.00604},
year = {2020}
}