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Two-dimensional density patterns with two-, four- and six-fold symmetries emerge in homogeneous Bose–Einstein condensates when the atomic interactions are modulated at multiple frequencies causing the coherent mixing of excitations.
A detailed neutron-scattering study reveals a quantum spin liquid behaviour in Ce2Sn2O7 originating from its higher-order magnetic multipolar moments acting on the geometrically frustrated pyrochlore lattice.
Activity in certain living systems can lead to swirling flows akin to turbulence. Here, the authors connect the dynamics of topological defects in starfish oocyte membranes to vortex dynamics in 2D Bose–Einstein condensates.
One way of producing Majorana fermions for topological quantum computing is to induce superconductivity in other topological states. Here, the proximity effect does this for the quantum spin Hall effect state in a 2D material.
The choice of the physical system that represents a qubit can help reduce errors. Encoding them in the quadrature space of a superconducting resonator leads to exponentially reduced bit-flip rates, while phase-flip errors increase only linearly.
Bound states at zero energy are observed at the ends of a line defect formed of atomic vacancies on the surface of a high-temperature superconductor. This indicates the possible presence of Majorana modes.
Spectroscopic study of the low-energy excitations in magnetite Fe3O4 shows the signatures of its charge-ordered structure involved in the metal–insulator transition, whose building blocks are the three-site small polarons, termed trimerons.
An imaging study of planarian flatworm brains demonstrates that densely packed neural tissues seem to have packing configurations commensurate with a jammed state.
Small-angle neutron scattering measurements show that the vortices of the heavy-fermion compound UPt3 possess an internal degree of freedom in one of its three superconducting phases, implying the breaking of time-reversal symmetry in the bulk.
The STAR collaboration reports a measurement of the mass difference and binding energy of the hypertriton and its antiparticle. This work constrains the hyperon–nucleon interaction and allows us to test the CPT theorem in a nucleus with strangeness.
Knowledge of the spreading mechanisms of contagions is important for understanding a range of epidemiological and social problems. A study now shows that so-called simple and complex contagions cannot be told apart if there is more than one simple contagion traversing the population at the same time.
Light-induced deformations in a film of superfluid helium covering an optical microresonator can greatly enhance Brillouin interactions, enabling strong coupling between counter-propagating modes as well as Brillouin lasing.
Cooling an atom–ion hybrid system and bringing it into the quantum regime is challenging owing to the unavoidable heating caused by atom–ion collisions. Here a new record low is achieved in such a system, and the quantum effect starts to manifest.
In a process dubbed elastic ripening, compressive stresses in a polymer network are shown to suppress phase separation of the solvent that swells it, stabilizing mixtures well beyond the liquid–liquid phase separation boundary.
In natural materials, defects determine many properties. In spin-analogue mechanical metamaterials, deterministically inserted topological defects enable the design of complex deformation and stress distributions.
A combined ARPES and DFT study of Ru- and Rh-substituted samples of Sr2IrO4 reveals a collapse of its correlated insulating phase that is controlled by spin–orbit coupling.
The motor protein dynein is associated with microtubule force generation in the cell; how it interacts with cytoskeletal fluctuations is still an open question. Here the authors show that dynein can harness these fluctuations to generate power and move faster towards the minus-end of microtubules.
The authors develop a high-spatial-resolution photoemission technique to show variation of the energy of the Dirac point of approximately 50 meV. They also find an interplay between bulk and surface states.
Non-equilibrium Bose–Einstein condensation of exciton polaritons in chains of lead halide perovskite pillars can occur at room temperature. These condensates have long spatial coherence.
Magnetic reconnection in the near-Earth magnetotail is observed to power a space storm, although suppression of magnetic reconnection caused by the Earth’s magnetic dipole was expected close to Earth.