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Emergent honeycomb network of topological excitations in correlated charge density wave

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Title
Emergent honeycomb network of topological excitations in correlated charge density wave
Author(s)
Jae Whan Park; Cho, GY; Jinwon Lee; Han Woong Yeom
Publication Date
2019-09
Journal
NATURE COMMUNICATIONS, v.10, no.1, pp.4038 -
Publisher
NATURE PUBLISHING GROUP
Abstract
© 2019, The Author(s).When two periodic potentials compete in materials, one may adopt the other, which straightforwardly generates topological defects. Of particular interest are domain walls in charge-, dipole-, and spin-ordered systems, which govern macroscopic properties and important functionality. However, detailed atomic and electronic structures of domain walls have often been uncertain and the microscopic mechanism of their functionality has been elusive. Here, we clarify the complete atomic and electronic structures of the domain wall network, a honeycomb network connected by Z3 vortices, in the nearly commensurate Mott charge-density wave (CDW) phase of 1T-TaS2. Scanning tunneling microscopy resolves characteristic charge orders within domain walls and their vortices. Density functional theory calculations disclose their unique atomic relaxations and the metallic in-gap states confined tightly therein. A generic theory is constructed, which connects this emergent honeycomb network of conducting electrons to the enhanced superconductivity
URI
https://pr.ibs.re.kr/handle/8788114/6884
ISSN
2041-1723
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > Journal Papers (저널논문)
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[대표]2019_Natur comm_박재환(제1저자),단장(교신),Emergent honeycomb network of topological excitations in correlated charge density wave.pdfDownload

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