Atomic Structure, Energetics, and Dynamics of Topological Solitons in Indium Chains on Si(111) Surfacesopen access
- Authors
- Zhang, Hui; Choi, Jin-Ho; Xu, Yang; Wang, Xiuxia; Zhai, Xiaofang; Wang, Bing; Zeng, Changgan; Cho, Jun-Hyung; Zhang, Zhenyu; Hou, J. G.
- Issue Date
- Jan-2011
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.106, no.2, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 106
- Number
- 2
- Start Page
- 1
- End Page
- 4
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/151347
- DOI
- 10.1103/PhysRevLett.106.026801
- ISSN
- 0031-9007
- Abstract
- Based on scanning tunneling microscopy and first-principles theoretical studies, we characterize the precise atomic structure of a topological soliton in In chains grown on Si(111) surfaces. Variable-temperature measurements of the soliton population allow us to determine the soliton formation energy to be similar to 60 meV, smaller than one-half of the band gap of similar to 200 meV. Once created, these solitons have very low mobility, even though the activation energy is only about 20 meV; the sluggish nature is attributed to the exceptionally low attempt frequency for soliton migration. We further demonstrate local electric field-enhanced soliton dynamics.
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