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Nature Physics offers a unique mix of news and reviews alongside top-quality research papers. Published monthly, in print and online, the journal reflects the entire spectrum of physics, pure and applied.
Ενημερώθηκε: πριν από 1 ώρα 5 λεπτά

Fireball spectroscopy

Δευ, 29/07/2019 - 00:00

Nature Physics, Published online: 29 July 2019; doi:10.1038/s41567-019-0614-5

The visible mass in the Universe emerged when hadrons — the building blocks of atomic nuclei — formed from a hot fireball made of quarks and gluons. This mechanism has now been investigated in baryon-rich matter at relatively low temperatures.

A laboratory model for the Parker spiral and magnetized stellar winds

Δευ, 29/07/2019 - 00:00

Nature Physics, Published online: 29 July 2019; doi:10.1038/s41567-019-0592-7

The Parker spiral—arising from the interaction between the Sun’s magnetic field with the solar wind—is recreated in the laboratory from a rapidly rotating plasma magnetosphere.

Author Correction: Kondo screening in a charge-insulating spinon metal

Πέμ, 18/07/2019 - 00:00

Nature Physics, Published online: 18 July 2019; doi:10.1038/s41567-019-0634-1

Author Correction: Kondo screening in a charge-insulating spinon metal

Disorder-induced multifractal superconductivity in monolayer niobium dichalcogenides

Δευ, 15/07/2019 - 00:00

Nature Physics, Published online: 15 July 2019; doi:10.1038/s41567-019-0570-0

Disorder present in monolayer NbSe2 is found to be able to enhance its superconductivity. A systematic study reveals the origin—disorder-induced multifractality of the electron wavefunctions strengthens the local interactions.

Experimental signatures of a three-dimensional quantum spin liquid in effective spin-1/2 Ce<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> pyrochlore

Δευ, 15/07/2019 - 00:00

Nature Physics, Published online: 15 July 2019; doi:10.1038/s41567-019-0577-6

A detailed neutron scattering and muon spin relaxation study uncovers a continuum of magnetic excitations down to 35 mK in the pyrochlore lattice compound Ce2Zr2O7 with minimum chemical disorder, consistent with quantum spin liquid behaviour.

High-harmonic generation from an epsilon-near-zero material

Δευ, 15/07/2019 - 00:00

Nature Physics, Published online: 15 July 2019; doi:10.1038/s41567-019-0584-7

High harmonics are generated from a thin film by leveraging the epsilon-near-zero effect. These kinds of harmonic are found to exhibit a pronounced spectral redshift as well as linewidth broadening caused by the time-dependency of this effect.

Two are better than one

Δευ, 15/07/2019 - 00:00

Nature Physics, Published online: 15 July 2019; doi:10.1038/s41567-019-0566-9

Two-level quantum systems are routinely excited by resonant pump beams. Experiments now show resonant excitation through dichromatic, detuned pumps — providing a coherent control technique that will also aid single-photon emission from solid-state devices.

Coherently driving a single quantum two-level system with dichromatic laser pulses

Δευ, 15/07/2019 - 00:00

Nature Physics, Published online: 15 July 2019; doi:10.1038/s41567-019-0585-6

A quantum two-level system can be coherently excited by a phase-locked dichromatic electromagnetic field. This technique can make single-photon generation more efficient as the pump light does not overlap in frequency with the emitted single photons.

Evidence of anisotropic Majorana bound states in 2M<i>-</i>WS<sub>2</sub>

Δευ, 08/07/2019 - 00:00

Nature Physics, Published online: 08 July 2019; doi:10.1038/s41567-019-0576-7

Potential Majorana bound states are seen in the vortex cores of a transition metal dichalcogenide. The properties of the superconductor mean that the bound states are highly anisotropic, and can appear at higher temperatures than other materials.

A sudden twist

Δευ, 08/07/2019 - 00:00

Nature Physics, Published online: 08 July 2019; doi:10.1038/s41567-019-0595-4

Floquet engineering harnesses alternating fields to create a topological band structure in an otherwise ordinary material. These fields drive plasmons that can spontaneously split into chiral circulating modes and induce magnetization.

Fragility of the dissipationless state in clean two-dimensional superconductors

Δευ, 08/07/2019 - 00:00

Nature Physics, Published online: 08 July 2019; doi:10.1038/s41567-019-0571-z

This investigation of the two-dimensional superconductor–insulator transition in NbSe2 shows a strong dependence on the number of layers, and that fully dissipationless superconductivity is almost absent in the monolayer.

Self-induced Berry flux and spontaneous non-equilibrium magnetism

Δευ, 08/07/2019 - 00:00

Nature Physics, Published online: 08 July 2019; doi:10.1038/s41567-019-0578-5

The authors predict that Berry flux can be spontaneously generated in a metal by plasmonic oscillations in response to illumination by light. They show that this topological ‘Berryogenesis’ can work in graphene.

The right platform for the job

Τρί, 02/07/2019 - 00:00

Nature Physics, Published online: 02 July 2019; doi:10.1038/s41567-019-0591-8

Photonic circuits naturally implement boson sampling, a quantum algorithm that is classically hard to solve. Four photon pairs produced and processed within a single silicon chip have now been used to run it, a step towards besting classical computers.

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