Atomically thin transition metal dichalcogenides (TMDs) are 2D semiconductors with tightly
bound excitons and correspondingly strong light–matter interactions. Owing to the weak van …

The design and control of material interfaces is a foundational approach to realize
technologically useful effects and engineer material properties. This is especially true for two …

Excitonic insulators (EIs) arise from the formation of bound electron–hole pairs (excitons), in
semiconductors and provide a solid-state platform for quantum many-boson physics …

Strong, long-range dipole–dipole interactions between interlayer excitons (IXs) can lead to
new multiparticle correlation regimes,, which drive the system into distinct quantum and …

All known superfluid and superconducting states of condensed matter are enabled by
composite bosons (atoms, molecules and Cooper pairs) made of an even number of …

The exciton, a bound state of an electron and a hole, is a fundamental quasiparticle induced
by coherent light–matter interactions in semiconductors. When the electrons and holes are …

In heterostructures consisting of different transition-metal dichalcogenide monolayers, a
staggered band alignment can occur, leading to rapid charge separation of optically …

Electron–hole pairing can occur in a dilute semimetal, transforming the system into an
excitonic insulator state in which a gap spontaneously appears at the Fermi surface …

There is a rich variety of quantum liquids—such as superconductors, liquid helium and atom
Bose–Einstein condensates—that exhibit macroscopic coherence in the form of ordered …

An exciton is an electron–hole bound pair in a semiconductor. In the low-density limit, it is a
composite Bose quasi-particle, akin to the hydrogen atom. Just as in dilute atomic gases …