Anharmonicity Induced Supersolidity In Spin-Orbit Coupled Bose-Einstein Condensates
arXiv:1909.11871 · doi:10.1103/PhysRevA.102.033328
Abstract
Supersolid, a fascinating quantum state of matter, features novel phenomena such as the non-classical rotational inertia and transport anomalies. It is a long standing issue of the coexistence of superfluidity and broken translational symmetry in condensed matter physics. By recent experimental advances to create tunable synthetic spin-orbit coupling in ultracold gases, such highly controllable atomic systems would provide new possibilities to access supersolidity with no counterpart in solids. Here we report that the combination of anharmonicity of trapping potential and spin-orbit coupling will provide a new paradigm to achieve supersolids. By means of imaginary time evolution of the Gross-Pitaevskii equation, we demonstrate that a supersolid state can be found when considering a trapped Rashba-type spin-orbit coupled bosonic atoms loaded in a one-dimensional optical lattice. Furthermore, a skyrmion-anti-skyrmion lattice is associated with the appearance of such supersoildity, indicating the topological nontrivial properties of our proposed supersolids.
arXiv comment6 pages, 3 figures
References in corpus (26)
- Artificial gauge potentials for neutral atoms
- Light-induced gauge fields for ultracold atoms
- Spin-orbit coupling in quantum gases
- Degenerate Quantum Gases with Spin-Orbit Coupling
- Observation of the supersolid stripe phase in spin-orbit coupled Bose-Einstein condensates
- Supersolid formation in a quantum gas breaking continuous translational symmetry
- Observation of a dipolar quantum gas with metastable supersolid properties
- Three-dimensional Roton-Excitations and Supersolid formation in Rydberg-excited Bose-Einstein Condensates
- Transient supersolid properties in an array of dipolar quantum droplets
- Supersolids: what and where are they ?
- Long-lived and transient supersolid behaviors in dipolar quantum gases
- Supersolid hardcore bosons on the triangular lattice
- A superfluid-droplet crystal and a free-space supersolid in a dipole-blockaded gas
- Spin-Orbit Coupled Quantum Gases
- On the Supersolid State of Matter
- Superfluidity of Grain Boundaries in Solid Helium-4
- Observation of Unusual Mass Transport in Solid hcp 4He
- What makes a crystal supersolid ?
- Supersolid Vortex Crystals in Rydberg-dressed Bose-Einstein Condensates
- Supersolid Helium at High Pressure
- Off-Diagonal Long-Range Order in Solid 4He
- Stability of superfluid and supersolid phases of dipolar bosons in optical lattices
- Opposite effect of spin-orbit coupling on condensation and superfluidity
- Quantum depletion and superfluid density of a supersolid in Raman spin-orbit coupled Bose gases
- Quantum statistics and the momentum distribution of liquid para-hydrogen
- Supersolid phases of dipolar bosons in optical lattices with a staggered flux