Moiré heterostructures of layered materials such as transition metal dichalcogenides enable periodic arrays of localized quasi-particles with long-range Coulomb interactions which can host a plethora of quantum phenomena. Depending on the lattice mismatch and twist angle across the individual layers, resulting moiré potential modulates the distribution of electronic states, significantly changing the landscape of moiré excitons and their characteristics. We employ simultaneous hyperspectral electron energy loss spectroscopy and annular dark field imaging in a scanning transmission electron microscope to investigate WS2/WSe2 heterostructures at the nanoscale. Through this technique, we present the mapping of intralayer moiré excitons within a moiré supercell, shedding light on the interplay between interlayer coupling and atomic reconstruction. Our observations provide valuable insights into the mechanisms governing the formation and confinement of moiré excitons in these systems.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.