Research articles

Polaritons are an integral part of semiconductor optical devices and control of their inherent spin-like properties is necessary to explore the potential implications of this phenomenon. Here, the authors magnetically control the transport of polariton spin in a microcavity and explain the polarisation dynamics in terms of the polariton pseudospin.

The crystal symmetry of a material impacts on its electronic structure and can lead to a range of interesting non-trivial topological phases and properties. Here, the authors theoretically study thin films of rhombohedral graphite and investigate the Berry curvature induced anomalous transport properties.

The mechanism behind unconventional superconductivity in Sr2RuO4 is still not fully understood and results from a complex interplay between spin, charge and orbital degrees of freedom. The authors develop a parameter-free theoretical approach and demonstrate that the superconductivity exhibits both singlet and triplet components the relative strength of which is dependent on the interplay between the spin and charge fluctuations and can be controlled by strain.

Manipulating magnon radiation is fundamental for enhancing efficient information transfer and storage in spintronic devices. This paper provides an experimental demonstration of magnonics-based hybrid systems of tunable magnon radiative damping through photon coupling in a waveguide cavity.*

Coherent control is a necessity in semiconductors spintronics. The authors use electric dipole spin resonance to control a GaAs double quantum dot demonstrating electrical tunability of the Zeeman splitting, enabling local qubit control within short time compared to the spin coherence time.

Progress in quantum technologies calls for increased precision in probing quantum systems. The authors present a method for substantially improving the precision bound of ultra low-temperature thermometry via dynamical control of a quantum thermometer.

Coulomb drag describes a phenomenon where long-range Coulomb interactions occur between charge carriers in two electrically isolated systems, and a current applied to one system can induce a current (or voltage) in the other. Here, the authors theoretically investigate the contribution of plasmons, phonons, and exchange-correlation to Coulomb drag in a graphene/h-BN/graphene heterostructures.

Fresnel zone plates are capable of manipulating the amplitude, phase and polarization of light, but conventional designs require different materials for each functionality. Here, metasurface zone plates consisting of subwavelength antenna arrays, capable of efficient, multifunctional control from a single material, are presented.

Efficient manipulation of quantum states is a key step towards applications in quantum information, quantum metrology, and nonlinear optics. In this paper, the authors show that 1D atomic arrays in a periodic magnetic field can realize an effective 2D Hofstadter-butterfly-like model with synthetic dimensions exhibiting super- and sub-radiant topological edge states despite featuring long-range interactions.

In cosmology, significant effort is deployed in the search of Dark Matter candidates but no viable solution has yet been found. Using public data from the first run of LIGO, the authors show that they can improve constraints, in a specific mass range, on ultra-light dark matter particle candidates named dark photons, with future gravitational waves detectors to provide increased sensitivity across a larger mass range.

Non-trivial topological states of matter are of interest due to the unusual physics which they exhibit. Here, using numerical simulations, the authors propose a 3D metamaterial consisting of granular beads, which host exotic interlaced and intersecting loop-degeneracies in momentum space that are accompanied by topologically protected surface states.

Accurate in-situ temperature assessment for live tissue is important to help in medical diagnosis, however current methods exhibit problems when attempting to measure absolute temperature. Here, the authors present a non-invasive multinuclear method which utilises the differences between the precession frequency of proton and sodium nuclei in order to accurately determine the temperature of a system.

Viewed traditionally as problematic, buckling responses have more recently found application in a range of emergent technologies. Here, the authors present a method for controlling this response via free-energy landscape biasing, and demonstrate its capability by studying the buckling landscapes of cylindrical shells.

Intense high energy laser pulses can be used on materials to produce and control features at the nanoscale, which is necessary for future generation of nanodevices. The authors report an experimental study of damage and crater formation in silicon substrates formed by focusing ultrashort extreme ultraviolet pulses from a Free Electron Laser in Japan proving a proof of concept for high control in material processing for a variety of applications.

An optical cycling center (OCC) is a recent term describing two electronic states within a quantum object undergoing repeated optical laser excitation and spontaneous decay, while being isolated from its environment. The authors present ab-initio calculations of the ground and excited electronic and vibronic states of the polyatomic molecule SrOH providing detailed understanding of the complex molecular cooling processes with an OCC.

Majorana fermions, or Majorana quasiparticles, are highly sought after in condensed matter systems due to their nontrivial nature important both in fundamental research as well as potential applications in quantum computing. Here, the authors propose a heterostructure of ferromagnet, topological insulator film, and superconductor, and demonstrate theoretically that chiral Majorana edge modes could exist in realistic experimentally accessible parameter regimes.

The recent discovery of superconductivity with an unusually high upper critical field in the heavy fermion system UTe2 has incited enormous interest in this material as one of the rare known spin-triplet superconductors with potentials for topological superconductivity and quantum computing. In this work, the authors report evidence for enhanced superconductivity and multiple superconducting phases in UTe2 under hydrostatic pressure, revealing a very rich phase landscape in this material.

Mott insulation and charge density waves are fascinating phenomena which alter the electronic structure of a system and occur via the complex interplay of a number of different parameters. Here, the authors use scanning tunnelling microscopy to investigate the localised changes in the electronic state near the insulator-metal transition of 1T-TaS₂ and find that strain may play a role.

Skyrmions are topologically nontrivial spin textures which could be used as energy efficient carriers of information in future memory devices, but first reliable and efficient control of their movement is required. Here, the authors demonstrate a method to control the movement of individual skyrmions by making use of the magnetic interaction between a sample and a magnetic force microscopy probe.

Small-world networks describe mathematically many natural and man-made networks such as neurons, power grids or social networks, but a measure of how small a small-world network is, remains a subject of debate. The authors identify the limiting cases with the shortest and longest average path for a given number of nodes and edges, which can be used as benchmarks to evaluate the average shortest path length for both empirical and model networks.