Chiral solitons in a coupled double Peierls chain
SCIE
SCOPUS
- Title
- Chiral solitons in a coupled double Peierls chain
- Authors
- Cheon, S; KIM, TAE HWAN; Lee, SH; Yeom, HW
- Date Issued
- 2015-10
- Publisher
- American Association for the Advancement of Science
- Abstract
- Chiraledge states are the hallmark of two-and three-dimensional topological materials, but their one-dimensional (1D) analog has not yet been found. We report that the 1D topological edge states, solitons, of the charge density wave system of indium atomic wires self-assembled on a silicon surface have chirality. The system is described by a coupled double Peierls-dimerized atomic chain, where the interchain coupling induces dynamical sublattice symmetry breaking. This changes its topological symmetry from Z(2) x Z(2) to Z(4) and endows solitons with a chiral degree of freedom. Chiral solitons can produce quantized charge transport across the chain that is topologically protected and controllable by the soliton's chirality. Individual right-and left-chiral solitons in indium wires are directly identified by scanning tunneling microscopy.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/35263
- DOI
- 10.1126/science.aaa7055
- ISSN
- 0036-8075
- Article Type
- Article
- Citation
- SCIENCE, vol. 350, no. 6257, page. 182 - 185, 2015-10
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.