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Scanning tunneling microscopy (STM) is a powerful tool that can be used to both investigate and manipulate surfaces at the atomic scale. Here, using epitaxial graphene layers on a SiC substrate, the authors show that STM can be used to manipulate the covalent bonding between a graphitic buffer layer-substrate interface, and in turn modify the charge state of the epitaxial graphene.
Kagome materials provide a platform to investigate the interplay between a range of ordered phases such as charge density waves, superconductivity, as well as non-trivial topological properties. Here, the authors observed the two-fold symmetric superconductivity in RbV3Sb5, which suggests the presence of unconventional superconductivity involved with nematic states and spin-orbit-parity coupled superconductivity.
Whispering gallery mode microcavities with asymmetric backscattering provide a platform to characterise non-orthogonal Hermitian features, but the majority of the studies focus on near-field measurements. The authors realize a non-Hermitian platform and characterise its far-field features in terms of polarization via confocal micro-photoluminescence.
In the case of rare earth insulators, local moments on 4f-electron shells are coupled through interatomic superexchange interactions resulting in magnetic orders at low temperatures. Here, the authors demonstrate that conventional Heisenberg interactions in PrO2 are negligible and its unusual magnetic ordering is driven by superexchange between high-order multipolar moments.
The Cheshire Cat phenomenon in quantum mechanics refers to a captivating observation where a particle and its properties behave as if they were separated. Here, the authors show the possibility of observing the Cheshire Cat phenomenon via interferometric neutron experiments in agreement with a weak measurement theoretical approach.
The lack of Galilean invariance in spin-orbit coupled systems greatly reduces the controllability of optical lattices and strongly limits applications. By simultaneously applying Raman and radio frequency coupling to a dilute-gas Bose-Einstein condensate, the authors generate an emerging lattice with restored Galilean invariance.
Topological superconductivity is anticipated to provide an appropriate platform for realizing Majorana fermions, garnering significant interest for the development of quantum computing. Here, using DFT and many-body mean-field theory, the authors investigate the bulk superconductivity of KZnBi where their calculations suggest the presence of hosohedral nodal-line superconductivity.
Quantum Rabi model as an outstanding model can support superradiant phase transitions, and gets increasing interest in the quantum physics. This work presents an effective method to demonstrate the dynamical critical phenomenon in quantum Rabi model without preparing the Confirmed equilibrium state, i.e., a sudden change of the photon number distribution.
The underlying symmetry of a given system dictates the material properties from the electronic band structure to its spontaneous symmetry broken ordering. Here, the authors consider the effects of symmetry breaking and investigate spin-singlet orbital triplet pairings in unconventional superconductors with electronic nematicity, they apply their results to iron-based superconductors and twisted bilayer graphene.
Knots are mathematically and physically complex objects that have only rarely been realized in quantum fluids and optics. The authors create knotted quantum wavefunctions of a spinor Bose gas and recognize a close mapping of the results to a recent realization of knots in the polarization of an optical field, exploring common features of topology: a topological atom optics.
Embedding methods for signed networks typically rely on clustering, losing the access to continuous attributes from nodes. The authors present the physically-insipired method SHEEP (Signed Hamiltonian Eigenvector Embedding for Proximity), able to preserve the continuity of node attributes while reducing the dimensionality of the network.
Acceleration of heavy ions is difficult in presence of low charge contaminants due to their high charge-to-mass ratio. The authors use ultra-thin Au foils to efficiently accelerate both contaminants and heavy ions, discussing the interplay between distinct acceleration mechanisms at different stages of interaction via particle-in-cell simulations.
A turbulent binary fluid strives for a relaxed state after the forcing has been switched off. Using direct numerical simulations of the Cahn-Hilliard-NavierStokes system, it is found that the bulk of each fluid and the interface relax differently following a universal path of relaxation.
Resorting to resonant Auger spectroscopy mitigates the energy resolution limit of time-resolved X-ray photoelectron spectroscopy, but reconstructing the full nuclear wavepacket evolution from it is an open challenge. The authors retrieve the full information of a nuclear wavepacket from time-resolved resonant Auger spectroscopy measurements.
New experimental realizations of skyrmion dynamics have opened the door to interesting possibilities for controlling light-matter interaction in a tunable way. This paper introduces a collective variable model of skyrmion dynamics under the action of a tunable electric field.
Photonic integrated processors couple to free-space structured light and on-chip processing reveals its amplitude and phase distribution. The authors demonstrate this concept for higherorder beams, thereby expanding the potential applications of photonic integrated processors.
Relativistic laser-solid interactions are simulated via particle-in-cell (PIC) approaches, while subrelativistic regimes rely on radiation-hydrodynamics formulations. To validate the methods at the transition from relativistic to subrelativistic laser intensities, the authors propose a testbed to experimentally benchmark PIC simulations.
Colloidal nanocrystals are used to prepare high-color-purity metal halide perovskites for LEDs, but the color purity is disrupted by the broadening of the photoluminescent spectrum. The authors present a method to quantify the distinct effects causing such broadening and identify ideal conditions to remove the broadening due to exciton-phonon coupling.
Integrated communication and sensing require high performance, sensing precision and preliminary knowledge of the channel, posing challenges to sensing weak signals from non-stationary channels. In this work, the authors demonstrate a weak signal extraction method with weak measurement, achieving weak signal sensing through a non-stationary channel.
