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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 38 λεπτά 7 δευτερόλεπτα

Better than Brillouin

Δευ, 02/04/2018 - 00:00

Better than Brillouin

Better than Brillouin, Published online: 02 April 2018; doi:10.1038/s41567-018-0102-3

Light can be coupled to sound via Brillouin scattering, but realizing an efficient interaction isn’t trivial. A new type of resonator succeeds in doing so in a macroscopic device — boasting features that better its nanoscale counterparts.

Doping-induced disappearance of ice II from water’s phase diagram

Δευ, 02/04/2018 - 00:00

Doping-induced disappearance of ice II from water’s phase diagram

Doping-induced disappearance of ice II from water’s phase diagram, Published online: 02 April 2018; doi:10.1038/s41567-018-0094-z

The many phases of water ice continue to be fertile ground for surprising discoveries. This latest study reveals that ice II vanishes from the phase diagram of water upon the addition of small amounts of ammonium fluoride.

Rotational spectroscopy of cold and trapped molecular ions in the Lamb–Dicke regime

Δευ, 26/03/2018 - 00:00

Rotational spectroscopy of cold and trapped molecular ions in the Lamb–Dicke regime

Rotational spectroscopy of cold and trapped molecular ions in the Lamb–Dicke regime, Published online: 26 March 2018; doi:10.1038/s41567-018-0074-3

Doppler-free, ultrahigh-resolution rotational spectroscopy is reported for small molecular ions in a linear quadrupole trap. With 10–9 fractional linewidth, this method has a 50-fold improvement over previous reports.

Mutual information, neural networks and the renormalization group

Δευ, 26/03/2018 - 00:00

Mutual information, neural networks and the renormalization group

Mutual information, neural networks and the renormalization group, Published online: 26 March 2018; doi:10.1038/s41567-018-0081-4

Finding the relevant degrees of freedom of a system is a key step in any renormalization group procedure. But this can be difficult, particularly in strongly interacting systems. A machine-learning algorithm proves adept at identifying them for us.

Tunable emergent heterostructures in a prototypical correlated metal

Δευ, 26/03/2018 - 00:00

Tunable emergent heterostructures in a prototypical correlated metal

Tunable emergent heterostructures in a prototypical correlated metal, Published online: 26 March 2018; doi:10.1038/s41567-018-0060-9

By means of a sensitive neutron spectroscopy approach the magnetic excitations in the heavy fermion superconductor CeRhIn5 are probed, revealing a uniaxial anisotropy that can be tuned with an external magnetic field.

Entanglement of purification through holographic duality

Δευ, 26/03/2018 - 00:00

Entanglement of purification through holographic duality

Entanglement of purification through holographic duality, Published online: 26 March 2018; doi:10.1038/s41567-018-0075-2

A quantity that connects quantum information and gravity in the light of gauge/gravity correspondence is pointed out, leading to interesting properties of the entanglement of purification predicted in the holographic theories.

Ultrafast preparation and detection of ring currents in single atoms

Δευ, 26/03/2018 - 00:00

Ultrafast preparation and detection of ring currents in single atoms

Ultrafast preparation and detection of ring currents in single atoms, Published online: 26 March 2018; doi:10.1038/s41567-018-0080-5

When an electron with specific orbit — either clockwise or anticlockwise — in a rare gas atom is selectively ionized, the remaining ion will possess a stationary ring current, which can be probed in a time-delayed second ionization step.

Publisher Correction: A quantum dipolar spin liquid

Τετ, 21/03/2018 - 00:00

Publisher Correction: A quantum dipolar spin liquid

Publisher Correction: A quantum dipolar spin liquid, Published online: 21 March 2018; doi:10.1038/s41567-018-0095-y

Publisher Correction: A quantum dipolar spin liquid

A strongly interacting polaritonic quantum dot

Δευ, 19/03/2018 - 00:00

A strongly interacting polaritonic quantum dot

A strongly interacting polaritonic quantum dot, Published online: 19 March 2018; doi:10.1038/s41567-018-0071-6

Cavity polaritons whose matter component is composed of highly excited Rydberg atoms are shown to act as a zero-dimensional quantum dot. Trapping 150 polaritons led to the observation of blockaded photon transport.

Multiscale unfolding of real networks by geometric renormalization

Δευ, 19/03/2018 - 00:00

Multiscale unfolding of real networks by geometric renormalization

Multiscale unfolding of real networks by geometric renormalization, Published online: 19 March 2018; doi:10.1038/s41567-018-0072-5

Complex networks are not obviously renormalizable, as different length scales coexist. Embedding networks in a geometrical space allows the definition of a renormalization group that can be used to construct smaller-scale replicas of large networks.

Towards anti-causal Green’s function for three-dimensional sub-diffraction focusing

Δευ, 19/03/2018 - 00:00

Towards anti-causal Green’s function for three-dimensional sub-diffraction focusing

Towards anti-causal Green’s function for three-dimensional sub-diffraction focusing, Published online: 19 March 2018; doi:10.1038/s41567-018-0082-3

A metamaterial-based acoustic sink has been designed to serve the purpose of absorbing the diverging waves and demonstrating three-dimensional sub-diffraction spherical sound wave focusing.

Quantum Landauer erasure with a molecular nanomagnet

Δευ, 19/03/2018 - 00:00

Quantum Landauer erasure with a molecular nanomagnet

Quantum Landauer erasure with a molecular nanomagnet, Published online: 19 March 2018; doi:10.1038/s41567-018-0070-7

Erasing a bit of information has a fundamental, minimal energy cost that is given by the Landauer limit. The erasure of quantum information from a quantum-spin memory register encoded in a molecular nanomagnet is shown to obey the same principle.

Anomalous Hall effect in ZrTe<sub>5</sub>

Δευ, 19/03/2018 - 00:00

Anomalous Hall effect in ZrTe5

Anomalous Hall effect in ZrTe<sub>5</sub>, Published online: 19 March 2018; doi:10.1038/s41567-018-0078-z

Magnetotransport measurements show that ZrTe5 exhibits an anomalous Hall effect without magnetic ordering, a signature of Berry curvature introduced by Weyl nodes. This indicates that ZrTe5 may be a Weyl semimetal, even though this was not predicted.

Publisher Correction: Universality of clone dynamics during tissue development

Παρ, 16/03/2018 - 00:00

Publisher Correction: Universality of clone dynamics during tissue development

Publisher Correction: Universality of clone dynamics during tissue development, Published online: 16 March 2018; doi:10.1038/s41567-018-0096-x

Publisher Correction: Universality of clone dynamics during tissue development

Electron acceleration by wave turbulence in a magnetized plasma

Δευ, 12/03/2018 - 00:00

Electron acceleration by wave turbulence in a magnetized plasma

Electron acceleration by wave turbulence in a magnetized plasma, Published online: 12 March 2018; doi:10.1038/s41567-018-0059-2

Electrons can be accelerated by astrophysical shocks if they are sufficiently fast to start with. As laboratory laser-produced shock experiments reveal, this can be achieved by lower-hybrid waves generated by a shock-reflected ion instability.

Quantum non-demolition detection of an itinerant microwave photon

Δευ, 12/03/2018 - 00:00

Quantum non-demolition detection of an itinerant microwave photon

Quantum non-demolition detection of an itinerant microwave photon, Published online: 12 March 2018; doi:10.1038/s41567-018-0066-3

Deterministic entanglement of a superconducting qubit and an itinerant microwave photon followed by high-fidelity qubit readout realizes a quantum non-demolition measurement of a microwave photon.

Attosecond optical-field-enhanced carrier injection into the GaAs conduction band

Δευ, 12/03/2018 - 00:00

Attosecond optical-field-enhanced carrier injection into the GaAs conduction band

Attosecond optical-field-enhanced carrier injection into the GaAs conduction band, Published online: 12 March 2018; doi:10.1038/s41567-018-0069-0

Significant enhancement of carrier injection into the conduction band is observed for GaAs subjected to intense resonant near-infrared laser pumping. Attosecond-resolved investigation reveals the interplay between the intra- and interband transitions.

Network structure from rich but noisy data

Δευ, 12/03/2018 - 00:00

Network structure from rich but noisy data

Network structure from rich but noisy data, Published online: 12 March 2018; doi:10.1038/s41567-018-0076-1

A technique allows optimal inference of the structure of a network when the available observed data are rich but noisy, incomplete or otherwise unreliable.

Alfvén wave dissipation in the solar chromosphere

Δευ, 05/03/2018 - 00:00

Alfvén wave dissipation in the solar chromosphere

Alfvén wave dissipation in the solar chromosphere, Published online: 05 March 2018; doi:10.1038/s41567-018-0058-3

The first observational evidence of plasma heating through the dissipation of Alfvén-wave energy in tenuous regions of solar magnetism provides fresh insight into heating processes in the solar atmosphere, and in other magnetohydrodynamic systems.

Emergence of anisotropic Gilbert damping in ultrathin Fe layers on GaAs(001)

Δευ, 05/03/2018 - 00:00

Emergence of anisotropic Gilbert damping in ultrathin Fe layers on GaAs(001)

Emergence of anisotropic Gilbert damping in ultrathin Fe layers on GaAs(001), Published online: 05 March 2018; doi:10.1038/s41567-018-0053-8

The Gilbert damping constant, a fundamental parameter to describe magnetization dynamics, is an isotropic scalar for most magnetic materials. Now, at a metal/semiconductor interface, the emergence of anisotropic magnetic damping has been observed.

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