Monolayer transition metal dichalcogenides (TMDs) host deeply bound excitons interacting with itinerant electrons, and as such they represent an exciting new quantum many-body Bose-Fermi mixture. Here, we demonstrate that electrons a Bose-Einstein condensate (BEC) of exciton-polaritons can realize two-dimensional topological ${p}_{x}+i{p}_{y}$ superconductor. Using strong coupling Eliashberg th...

In twisted bilayers of semiconducting transition metal dichalcogenides (TMDs), a combination structural rippling and electronic coupling gives rise to periodic moir\'e potentials that can confine charged neutral excitations. Here, we report experimental measurements the structure spectroscopic properties WSe2 MoSe2 in H-stacking configuration using scanning tunneling microscopy (STM). Our exper...

The Stark effect is one of the most efficient mechanisms to manipulate many-body states in nanostructured systems. In mono- and few-layer transition metal dichalcogenides, it has been successfully induced by optical electric field means. Here, we tune emission energies dissociate excitonic MoSe2 monolayers employing 220 MHz in-plane piezoelectric carried surface acoustic waves. We transfer high...

We show that the "dark condensates" arise when excitons form a Bose-Einstein condensate in material with an indirect bandgap are not completely dark to optical emission. Rather, such states "leaky which emission is facilitated by many-body interactions. analyze properties of these leaky condensates context twisted bilayers transition metal dichalcogenides, host strongly interacting and bandgap....

Ultrathin two-dimensional nanosheets of layered transition metal dichalcogenides (TMDs) are fundamentally and technologically intriguing. In contrast to the graphene sheet, they are chemically versatile. Mono- or few-layered TMDs - obtained either through exfoliation of bulk materials or bottom-up syntheses - are direct-gap semiconductors whose bandgap energy, as well as carrier type (n- or p-t...

Single-layer transition-metal dichalcogenides (TMDs) such as MoS2 and MoSe2 exhibit unique electronic band structures ideal for hosting many exotic spin-orbital orderings. It has been widely accepted that Rashba spin splitting (RSS) is linearly proportional to the external field in heterostructure interfaces or to the potential gradient in polar materials. Surprisingly, an extraordinary nonline...

Current interest in two-dimensional (2D) materials is driven in part by the ability to dramatically alter their optoelectronic properties through strain and phase engineering. A combination of these approaches can be applied in quasi-2D transition metal dichalcogenide (TMD) monolayers to induce displacive structural transformations between semiconducting (H) and metallic/semimetallic (T') phase...