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Nature Physics offers news and reviews alongside top-quality research papers in a monthly publication, covering the entire spectrum of physics. Physics addresses the properties and interactions of matter and energy, and plays a key role in the development of a broad range of technologies. To reflect this, Nature Physics covers all areas of pure and applied physics research. The journal focuses on core physics disciplines, but is also open to a broad range of topics whose central theme falls within the bounds of physics.
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A quantum collaboration for flat bands

Τετ, 31/01/2024 - 00:00

Nature Physics, Published online: 31 January 2024; doi:10.1038/s41567-024-02397-0

Multiple mechanisms can create electrons with reduced kinetic energy in solids. Combining these mechanisms now appears as a promising route to enhancing quantum effects in flat band materials.

Terahertz field-induced nonlinear coupling of two magnon modes in an antiferromagnet

Τετ, 31/01/2024 - 00:00

Nature Physics, Published online: 31 January 2024; doi:10.1038/s41567-024-02386-3

Magnons—quanta of spin waves—have potential applications in signal processing technology. But it is challenging to obtain coupling between different magnons. Now a study achieves this by demonstrating nonlinear magnon mixing in an antiferromagnet.

Correlated order at the tipping point in the kagome metal CsV<sub>3</sub>Sb<sub>5</sub>

Τετ, 31/01/2024 - 00:00

Nature Physics, Published online: 31 January 2024; doi:10.1038/s41567-023-02374-z

The electronic transport properties of charge-ordered kagome metals are controversial. Now careful measurements on unperturbed samples show that previously measured anisotropy in the transport occurs only when external perturbations are present.

Phonons bend to magnetic fields

Τρί, 30/01/2024 - 00:00

Nature Physics, Published online: 30 January 2024; doi:10.1038/s41567-023-02288-w

Phonons do not carry spin or charge, but they can couple to an external magnetic field and cause a sizable transverse thermal gradient. Experiments suggest that phonon handedness is a widespread effect in magnetic insulators with impurities.

Phonon chirality from impurity scattering in the antiferromagnetic phase of Sr<sub>2</sub>IrO<sub>4</sub>

Τρί, 30/01/2024 - 00:00

Nature Physics, Published online: 30 January 2024; doi:10.1038/s41567-024-02384-5

The thermal Hall effect of phonons does not yet have a definitive explanation. Now a careful study of doped Sr2IrO4 suggests that the mechanism involves the scattering of phonons by impurities embedded in an antiferromagnetic environment.

The interplay of field-tunable strongly correlated states in a multi-orbital moiré system

Τρί, 30/01/2024 - 00:00

Nature Physics, Published online: 30 January 2024; doi:10.1038/s41567-024-02385-4

Heterostructures of transition metal dichalcogenides are known to simulate the triangular-lattice Hubbard model. Now, by combining a monolayer and bilayer of different materials, this idea is extended to multi-orbital Hubbard models.

Propagation of extended fractures by local nucleation and rapid transverse expansion of crack-front distortion

Δευ, 29/01/2024 - 00:00

Nature Physics, Published online: 29 January 2024; doi:10.1038/s41567-023-02365-0

Understanding the three-dimensional nature of fracture formation and dynamics is challenging. Experiments now show that a fracture front, after originating at a particular locus in a material, propagates jump-wise and expands transversely at high speed.

Electronic transport probes a hidden state

Παρ, 26/01/2024 - 00:00

Nature Physics, Published online: 26 January 2024; doi:10.1038/s41567-023-02382-z

Electronic transport measurements of the anomalous Hall effect can probe properties of a frustrated kagome spin ice that are hidden from conventional thermodynamic and magnetic probes.

Time reversibility during the ageing of materials

Παρ, 26/01/2024 - 00:00

Nature Physics, Published online: 26 January 2024; doi:10.1038/s41567-023-02366-z

Physical ageing in glassy materials can be described in a linear way through the concept of material time. Multispeckle dynamic light scattering is now shown to provide experimental access to the material time, in terms of which fluctuations become statistically reversible.

Tunable quantum simulation of spin models with a two-dimensional ion crystal

Παρ, 26/01/2024 - 00:00

Nature Physics, Published online: 26 January 2024; doi:10.1038/s41567-023-02378-9

Most quantum simulations of spin models with trapped ions have been restricted to one dimension. Now, tunable simulations of Ising models with single-site detection have been demonstrated in two-dimensional ion crystals.

Non-Fermi liquid behaviour in a correlated flat-band pyrochlore lattice

Παρ, 26/01/2024 - 00:00

Nature Physics, Published online: 26 January 2024; doi:10.1038/s41567-023-02362-3

Observations of strong electron correlation effects have been mostly confined to compounds containing f orbital electrons. Now, the study of the 3d pyrochlore metal CuV2S4 reveals that similar effects can be induced by flat-band engineering.

Pocket pairs in iron-based materials

Πέμ, 25/01/2024 - 00:00

Nature Physics, Published online: 25 January 2024; doi:10.1038/s41567-023-02375-y

Experiments with unprecedented energy and momentum resolution reveal the nature of the pairing symmetry in KFe2As2 and pave the way for a unified theoretical description of unconventional superconductivity in iron-based materials.

Self-organized intracellular twisters

Πέμ, 25/01/2024 - 00:00

Nature Physics, Published online: 25 January 2024; doi:10.1038/s41567-023-02372-1

Cytoplasmic flows in the fruit fly oocyte can reorganize cellular components. These structured vortical flows arise through self-organizing dynamics of microtubules, molecular motors and cytoplasm.

Dipolar skyrmions and antiskyrmions of arbitrary topological charge at room temperature

Πέμ, 25/01/2024 - 00:00

Nature Physics, Published online: 25 January 2024; doi:10.1038/s41567-023-02358-z

Control over magnetic skyrmions at room temperature has important applications in technology. Now the observation of skyrmions with high topological charge widens the potential for them to be used in unconventional computing techniques.

Engineering multimode interactions in circuit quantum acoustodynamics

Πέμ, 25/01/2024 - 00:00

Nature Physics, Published online: 25 January 2024; doi:10.1038/s41567-023-02377-w

Quantum gates require controlled interactions between different degrees of freedom. A tunable coupling has now been demonstrated between the phonon modes of a mechanical resonator designed for storing and manipulating quantum information.

Hopping frustration-induced flat band and strange metallicity in a kagome metal

Πέμ, 25/01/2024 - 00:00

Nature Physics, Published online: 25 January 2024; doi:10.1038/s41567-023-02360-5

Electrons in f orbitals can create localized states that interact strongly and drive strange metal and critical behaviour via the Kondo mechanism. Now a mechanism of geometric frustration enables similar phenomena with d electrons.

Defects show self-constraint in active nematics

Τετ, 24/01/2024 - 00:00

Nature Physics, Published online: 24 January 2024; doi:10.1038/s41567-023-02352-5

Studies of a biological active nematic fluid reveal a spontaneous self-constraint that arises between self-motile topological defects and mesoscale coherent flow structures. The defects follow specific contours of the flow field, on which vorticity and strain rate balance, and hence, contrary to expectation, they break mirror symmetry.

Robust continuous time crystal in an electron–nuclear spin system

Τετ, 24/01/2024 - 00:00

Nature Physics, Published online: 24 January 2024; doi:10.1038/s41567-023-02351-6

Time crystals spontaneously produce periodic oscillations that are robust to perturbations. A time crystal phase with a long coherence time has now been produced using the electron and nuclear spins of a semiconductor sample.

Origin of the critical state in sheared granular materials

Τετ, 24/01/2024 - 00:00

Nature Physics, Published online: 24 January 2024; doi:10.1038/s41567-023-02353-4

When applying sufficient strain, the flow of dense granular matter becomes critical. It is now shown that this state corresponds to random loose packing for spheres with different friction coefficients and that these packings can be mapped onto the frictionless hard-sphere system.

Minimally rigid clusters in dense suspension flow

Τετ, 24/01/2024 - 00:00

Nature Physics, Published online: 24 January 2024; doi:10.1038/s41567-023-02354-3

Dense suspensions are granular materials suspended in a liquid at high packing fractions, exhibiting high viscosity. The latter is now shown to be related to the formation of a network of rigid clusters at large shear stress.

Σελίδες

Πανεπιστήμιο Κρήτης - Τμήμα Φυσικής - Πανεπιστημιούπολη Βουτών - TK 70013 Βασιλικά Βουτών, Ελλάδα
τηλ: +30 2810 394300 - email: chair@physics.uoc.gr