Charge state-dependent symmetry breaking of atomic defects in transition metal dichalcogenides.

ABSTRACT: The functionality of atomic quantum emitters is intrinsically linked to their host lattice coordination. Structural distortions that spontaneously break the lattice symmetry strongly impact their optical emission properties and spin-photon interface. Here we report on the direct imaging of charge state-dependent symmetry breaking of two prototypical atomic quantum emitters in mono- and bilayer MoS₂ by scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM). By changing the built-in substrate chemical potential, different charge states of sulfur vacancies (Vac_S) and substitutional rhenium dopants (Re_Mo) can be stabilized. Vac S-1 as well as Re Mo0 and Re Mo-1 exhibit local lattice distortions and symmetry-broken defect orbitals a

SUBMITTER: Xiang F 

PROVIDER: S-EPMC11258346 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature