Modeling of networks and globules of charged domain walls observed in pump and pulse induced states.

ABSTRACT: Experiments on optical and STM injection of carriers in layered MX₂ materials revealed the formation of nanoscale patterns with networks and globules of domain walls. This is thought to be responsible for the metallization transition of the Mott insulator and for stabilization of a "hidden" state. In response, here we present studies of the classical charged lattice gas model emulating the superlattice of polarons ubiquitous to the material of choice 1T - TaS₂. The injection pulse was simulated by introducing a small random concentration of voids which subsequent evolution was followed by means of Monte Carlo cooling. Below the detected phase transition, the voids gradually coalesce into domain walls forming locally connected globules and then the global network leadi

SUBMITTER: Karpov P 

PROVIDER: S-EPMC5840135 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature