Magnetoroton in a two-dimensional Bose-Bose mixture
arXiv:2404.04440 · doi:10.1103/PhysRevB.109.235135
Abstract
We extend our theory of slow magnons in a two-component Bose-Einstein condensate to the case of two spatial dimensions (2D). We provide a detailed discussion of polaronic corrections to the magnon branch of the elementary excitation spectrum in a weakly- and strongly-interacting regimes. In a dilute system, the latter may be achieved by adjusting inter-species attraction such as to obtain a resonance in the -wave scattering channel. Resonantly enhanced -wave attraction results in the self-localization of magnons and formation of a magnetoroton. The nature of a ground state beyond the magnetoroton instability remains to be explored. We suggest a dilute p-wave crystal of alternating polarization as a possible candidate. In contrast to three dimensions (3D), the required strength of the attractive potential in the -wave channel here corresponds to tight binding, and we suggest a potential realization of our model with excitons in 2D semiconductors.
arXiv comment11 pages, 8 figures
References in corpus (33)
- Quantum Mechanical Stabilization of a Collapsing Bose-Bose Mixture
- High-temperature superfluidity with indirect excitons in van der Waals heterostructures
- Phase separation of Bose-Einstein condensates
- Ultradilute low-dimensional liquids
- Multiplet Structure of Feshbach Resonances in non-zero partial waves
- Quasiparticle properties of a mobile impurity in a Bose-Einstein condensate
- Stability of the fermionic gases close to a p-wave Feshbach resonance
- Topological p_x+ip_y Superfluid Phase of Fermionic Polar Molecules
- Roton immiscibility in a two-component dipolar Bose gas
- Bilayer superfluidity of fermionic polar molecules: many body effects
- Two-dimensional scattering and bound states of polar molecules in bilayers
- Dilute Fluid Governed by Quantum Fluctuations
- Beyond Lee-Huang-Yang description of self-bound Bose mixtures
- Two-dimensional dipolar Bose gas with the roton-maxon excitation spectrum
- Two-fluid models of superfluid neutron star cores
- Non-dissipative drag of superflow in a two-component Bose gas
- Single-particle vs. pair superfluidity in a bilayer system of dipolar bosons
- Observation of Two Sound Modes in a Binary Superfluid Gas
- Magnetic phase transition in a mixture of two interacting Bose gases at finite temperature
- Multi-impurity polarons in a dilute Bose-Einstein condensate
- p-Wave Resonant Bose Gas: A Finite-Momentum Spinor Superfluid
- Andreev-Bashkin effect and knot solitons in interacting mixture of a charged and a neutral superfuids with possible releveance for neutron stars
- Effective interactions in a quantum Bose-Bose mixture
- Beyond mean-field properties of binary dipolar Bose mixtures at low temperatures
- Fragmented-condensate solid of dipolar excitons
- Attractive dipolar coupling between stacked exciton fluids
- Attractive and repulsive dipolar interaction in bilayers of indirect excitons
- 2D dilute Bose mixture at low temperatures
- Resonant Pairing of Excitons in Semiconductor Heterostructures
- Two-component superfluid hydrodynamics of neutron star cores
- Autolocalization in a dipolar exciton system
- Functional renormalization for repulsive Bose-Bose mixtures at zero temperature
- Self-localization of magnons and magnetoroton in a binary Bose-Einstein condensate