Emergent honeycomb network of topological excitations in correlated charge density wave.

ABSTRACT: 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 fu

SUBMITTER: Park JW 

PROVIDER: S-EPMC6731227 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature