6 papers
(Sub)nanoscale Visualization of Reconstruction-Driven Moiré Exciton Localization and Delocalization
Medha Dandu, Sriram Sankar, Giovanny Espitia +12
Spectral fingerprints in optical absorption and emission have typically been used as a signature of exciton localization in twisted moiré bilayers. However, the mechanism by which…
Probing (sub)nanoscale ferrons in an electron microscope
Mahir Manna, Fei Yang, Shayantan Chaudhuri +13
Ferrons are collective excitations of polarization fluctuations that can enable terahertz communications and quantum transduction due to long propagation lengths. Although ferrons…
Observation of moiré trapped biexciton through sub-diffraction-limit probing using hetero-bilayer on nanopillar
Mayank Chhaperwal, Suman Chatterjee, Suchithra Puliyassery +6
The ability to tune the degree of interaction among particles at the nanoscale is highly intriguing. The spectroscopic signature of such interaction is often subtle and requires sp…
Simultaneously enhancing brightness and purity of WSe single photon emitter using high-aspect-ratio nanopillar array on metal
Mayank Chhaperwal, Himanshu Madhukar Tongale, Patrick Hays +4
Monolayer semiconductor transferred on nanopillar arrays provides site-controlled, on-chip single photon emission, which is a scalable light source platform for quantum technologie…
Nature of long-lived moiré interlayer excitons in electrically tunable MoS/MoSe heterobilayers
Evgeny M. Alexeev, Carola M. Purser, Carmem M. Gilardoni +13
Interlayer excitons in transition-metal dichalcogenide heterobilayers combine high binding energy and valley-contrasting physics with long optical lifetime and strong dipolar chara…
Optical Imaging of Flavor Order in Flat Band Graphene
Tian Xie, Tobias M. Wolf, Siyuan Xu +15
Spin and valley flavor polarization plays a central role in the many-body physics of flat band graphene, with fermi surface reconstructions often accompanied by quantized anomalous…