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The strongly correlated interactions found in twisted bilayer systems give rise to a range of exotic phenomena but due to range of factors it is challenging to develop theoretical models that can faithfully describe the underlying physics. Here, the authors provide an analysis of the chiral limits of perturbed Dirac field theories that are relevant to C3-symmetric twisted bilayer graphene and transition metal dichalcogenides homobilayers. They identify two possible scenarios and show that flat bands are a more likely phenomenon in the latter system
Understanding the hybridization due to orbital overlap in solids allows justification for adjusting electron correlation and hopping integral under the Hubbard model. This work links spatial-overlap-driven to energetic-overlap-driven hybridization from perovskite oxides by resonant inelastic X-ray scattering at La N4,5 edges.
Condensates with a shell can be formed by liquid-liquid phase separation and can burst like viscous bubbles by nucleation and growth of a hole in the shell surrounded by a rim. The authors develop a model to extract a broad range of rheological properties for spherical shells to understand the conditions for bursting.
When a pulsed laser interacts with tissue, the molecules in the sample get excited to a higher energy state and relax either nonradiatively, leading to thermal damage, or via de-excitation processes, frequently associated with photodamage. Here, the authors explore how different photodamage mechanisms unfold across a spectrum of intense near-infrared femtosecond pulses.
To celebrate our 5 year anniversary we present a collection of some of our favourite articles selected by editors and Editorial Board Members. Also, don't forget to cast your vote for our top feature image!
Szymon Talaga is a PhD candidate in Robert Zajonc Institute for Social Studies at the University of Warsaw, where he is working on a project connecting sociological theories of social structure with modern network science. Dr. Sofia Teixeira is an Assistant Professor in the Department of Informatics at the Faculty of Sciences, University of Lisbon, and a researcher at LASIGE.
In April we have had the pleasure of welcome Jasna Brujic and Roberto Di Candia to our editorial board. They bring sought after expertise in our expanding journal.
Communications Physics has a 2-year impact factor of 5.5 (2022), a mean decision times of 7 days to first editorial decision and 50 days to first post-review decision (2023).
Superfluidity, a liquid exhibiting frictionless flow, is so far limited to observations in low-temperature 3He and 4He, where the underlying mechanisms governing the quantum state are complex and different for each isotope, making for a fascinating but challenging phenomenon to study experimentally. The authors use isotope-sensitive neutron reflectometry to investigate mixed 3He/4He superfluid He films on a Si surface, and resolve the structural features and phase transitions that occur with changing temperature.
Topological insulators with ordered moments of embedded magnetic atoms are viable platforms for quantum electronics, but the practical applications are restricted by the size of their crystals. The authors synthesize a Z2 topological insulator GexMn1-xBi2Te4 in the form of a large crystal with high structural perfection and tunable magnetic and electronic properties.
Hyperfine interaction is the key term for utilizing individual nuclear spins in solids. This work introduces a method that yields high-accuracy hyperfine values for nuclear spins at arbitrary distances from addressable electron spins, such as the NV center in diamond.
Compact localized states constitute an auxiliary state representation for a flat-band lattice system with wave functions non-zero only in a finite portion of the lattice. Here, the authors show that in some flat-band systems, these states can be partially “hidden”; surprisingly, these ghost flat bands present an obstruction to be represented as maximally localized Wannier functions.
Optical resonators are essential tools for high precision metrology and applications where the spectral purity is highly demanded. Here, the authors demonstrate a monolithic resonator made of fused silica to support 18 Hz integrated laser linewidth in the ambient environment, and W-band microwave generation with low phase noise of -100 dBc/Hz at 10 kHz frequency offset.
This study reports on the simultaneous emergence of the impurity Kondo effect and incommensurate magnetic ordering in the layered material AgCrSe2 these usually mutually exclusive phenomena complement each other. The ability to enable Kondo effect in association with the antiferromagnetic order, provides a novel route to tune the competition between magnetic correlations and Kondo screening.
High-order structures are ubiquitous in numerous real-world networks and play a significant role in social contagion phenomena, the authors introduce a novel higher-order non-Markovian social contagion model, addressing limitations of traditional models. Through mean-field theory and simulations, the authors demonstrate that there is an equivalence between the higher-order non-Markovian and the higher-order Markovian social contagions and reveal the resilience enhancement conferred by non-Markovian recovery, shedding light on real-world contagion dynamics.
The paper addresses the task of extracting individual objects from multi-dimensional overlapping-sparse images, with valuable impact in high-energy physics (future high-precision long-baseline neutrino oscillation experiments). The developed tool will allow to reduce systematic errors and avoid model dependence, improving the neutrino energy resolution and sensitivity.
In this study, the authors propose a generic machine-learning-assisted framework to improve the overall performance of quantum sensing application. In the context of an atomic force sensor, this entirely data-driven approach, which involves generating the digital twinning of experimental data, demonstrates an order of magnitude improvement in sensitivity compared to conventional protocols.
