Dynamic Ad-Dimer twisting assisted nanowire self-assembly on Si(001)

Jian Tao Wang, E. G. Wang, D. S. Wang, H. Mizuseki, Y. Kawazoe, M. Naitoh, S. Nishigaki

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Based on ab initio total energy calculation, we show that a dynamic ad-dimer twisting assisted (DATA) process plays a crucial role in facilitating a novel structural reconstruction involving surface and subsurface atoms on Si(001). It leads to self-assembly of long nanowires of group-V elements (Bi, Sb) in the trenches of surface dimer vacancy lines (DVLs) with a characteristic double-dimer configuration. The key to this is the lowering of the kinetic barrier by the DATA process in conjunction with a favorable interaction between ad-dimers and step edges in DVLs. The present results provide an excellent account for experimental observations and reveal the atomistic origin and the dynamic transformation path for nanowire self-assembly on Si(001).

Original languageEnglish
Article number226103
JournalPhysical review letters
Volume94
Issue number22
DOIs
Publication statusPublished - 2005 Jun 10

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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