Tunable Feshbach resonances and their spectral signatures in bilayer semiconductors

Abstract

Feshbach resonances are an invaluable tool in atomic physics, enabling precise control of interactions and the preparation of complex quantum phases of matter. Here, we theoretically analyze a solid-state analogue of a Feshbach resonance in two dimensional semiconductor heterostructures. In the presence of inter-layer electron tunneling, the scattering of excitons and electrons occupying different layers can be resonantly enhanced by tuning an applied electric field. The emergence of an inter-layer Feshbach molecule modifies the optical excitation spectrum, and can be understood in terms of Fermi polaron formation. We discuss potential implications for the realization of correlated Bose-Fermi mixtures in bilayer semiconductors.

6+2 pages, 4 figures

References in corpus (11)

• Many-Body Physics with Ultracold Gases
• Evidence of high-temperature exciton condensation in 2D atomic double layers
• Many-Body Theory of Trion Absorption Features in Two-Dimensional Semiconductors
• Polaritonic Feshbach Resonance
• Polaron-molecule transitions in a two-dimensional Fermi gas
• Highly polarized Fermi gases in two dimensions
• Observation of coherent multiorbital polarons in a two-dimensional Fermi gas
• Polarons and Molecules in a Two-Dimensional Fermi Gas
• Stability and breakdown of Fermi polarons in a strongly interacting Fermi-Bose mixture
• Observation of electrically tunable Feshbach resonances in twisted bilayer semiconductors
• Diagrammatic Monte Carlo study of quasi-two-dimensional Fermi-polarons

Cited by in corpus (17)

• Observation of electrically tunable Feshbach resonances in twisted bilayer semiconductors
• Topological superconductivity in doped magnetic moiré semiconductors
• Chiral Pseudo Spin Liquids in Moire Heterostructures
• Realizing Topological Superconductivity in Tunable Bose-Fermi Mixtures with Transition Metal Dichalcogenide Heterostructures
• Light-induced topological superconductivity in transition metal dichalcogenide monolayers
• Theory of intervalley-coherent AFM order and topological superconductivity in tWSe${}_2$
• Polaritons in an electron gas -- quasiparticles and Landau effective interactions
• Excitonic Tonks-Girardeau and charge-density wave phases in monolayer semiconductors
• Exciton interacting with a moiré lattice: Polarons, strings, and optical probing of spin correlations
• Scattering theory of mesons in doped antiferromagnetic Mott insulators: Multichannel perspective and Feshbach resonance
• Feshbach Resonances in Exciton-Charge-Carrier Scattering in Semiconductor Bilayers
• Boson-fermion pairing and condensation in two-dimensional Bose-Fermi mixtures
• Tuning transport in solid-state Bose-Fermi mixtures by Feshbach resonances
• Closed-channel parameters of Feshbach resonances
• Efficient variational approach to the Fermi polaron problem in two dimensions, both in and out of equilibrium
• Controllable fusion of electromagnetic bosons in two-dimensional semiconductors
• Probing spatially resolved spin density correlations with trapped excitons