188 0

Chiral solitons in a coupled double Peierls chain

Title
Chiral solitons in a coupled double Peierls chain
Author
천상모
Keywords
CONJUGATED DIATOMIC POLYMER; QUANTIZED HALL CONDUCTANCE; TOPOLOGICAL INSULATORS; CHARGE; INSTABILITY; TRANSPORT; SURFACE
Issue Date
2015-10
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE, v. 350, NO 6257, Page 182-185
Abstract
Chiral edge 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
http://science.sciencemag.org/content/350/6257/182http://hdl.handle.net/20.500.11754/28254
ISSN
0036-8075; 1095-9203
DOI
10.1126/science.aaa7055
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE