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Frustration and thermalization in an artificial magnetic quasicrystal

Nature Physics - Mon, 11/12/2017 - 00:00

Frustration and thermalization in an artificial magnetic quasicrystal

Frustration and thermalization in an artificial magnetic quasicrystal, Published online: 11 December 2017; doi:10.1038/s41567-017-0009-4

Nanomagnets are often used to build artificial systems that are geometrically frustrated, but when quasiperiodic ordering is introduced, an unusual ground state can form, with an ordered skeletal structure surrounding groups of degenerate macrospins.

Signatures of a dissipative phase transition in photon correlation measurements

Nature Physics - Mon, 11/12/2017 - 00:00

Signatures of a dissipative phase transition in photon correlation measurements

Signatures of a dissipative phase transition in photon correlation measurements, Published online: 11 December 2017; doi:10.1038/s41567-017-0020-9

Photon correlation measurements in driven-dissipative systems reveal the dynamical properties of dissipative phase transitions, as shown for optical bistability of cavity polaritons in GaAs.

Quantum criticality among entangled spin chains

Nature Physics - Mon, 11/12/2017 - 00:00

Quantum criticality among entangled spin chains

Quantum criticality among entangled spin chains, Published online: 11 December 2017; doi:10.1038/s41567-017-0010-y

Exploiting the magnetic field-induced shift of entropy in certain molecular salts when going from 1D short-range ordering to a 3D quantum critical point could provide a route for producing strongly fluctuating quantum materials.

Quantum violation of an instrumental test

Nature Physics - Mon, 11/12/2017 - 00:00

Quantum violation of an instrumental test

Quantum violation of an instrumental test, Published online: 11 December 2017; doi:10.1038/s41567-017-0008-5

Theory and experiment show that quantum correlations violate the instrumental test—a common statistical method used to estimate the strength of causal relationships between two variables.

Applications now open for CERN openlab Summer Student Programme 2018

Cern OpenLab News - Tue, 05/12/2017 - 17:42
Tuesday, 5 December, 2017

Applications for the 2018 CERN openlab Summer Student Programme are now open. Apply and open a world of possibilities!

By joining the programme, you will work on ambitious IT projects using some of the latest hardware and software technologies, and see how advanced IT solutions are used in high-energy physics. In addition, you will have the opportunity to attend a series of lectures developed for the CERN openlab summer students, given by IT experts on advanced CERN-related topics. Included in the programme are also visits(link is external) at the CERN facilities and experiments, as well as other research laboratories and companies.

The CERN openlab Summer Student Programme is much more than just a summer at CERN. It can lead to follow-on projects in your home institute. It may even inspire you to become an entrepreneur in cutting-edge computing technologies!

More details on the CERN openlab Summer Student Programme are available here.

Apply now on the 'Careers at CERN' website. The deadline for submitting applications is 19 February, 2018 (23:59 CET).

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials

Nature Physics - Tue, 05/12/2017 - 00:00

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials, Published online: 05 December 2017; doi:10.1038/nphys4315

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials

A matter of time

Nature Physics - Tue, 05/12/2017 - 00:00

A matter of time

A matter of time, Published online: 05 December 2017; doi:10.1038/nphys4327

The arrival of a new type of timekeeper heralds the end of the second as we know it, as Helen Margolis explains.

Energy transitions

Nature Physics - Tue, 05/12/2017 - 00:00

Energy transitions

Energy transitions, Published online: 05 December 2017; doi:10.1038/nphys4329

Energy transitions

Condensed-matter physics: Weyl metamaterials

Nature Physics - Tue, 05/12/2017 - 00:00

Condensed-matter physics: Weyl metamaterials

Condensed-matter physics: Weyl metamaterials, Published online: 05 December 2017; doi:10.1038/nphys4333

Condensed-matter physics: Weyl metamaterials

Quantum spin liquids: To be or not to be

Nature Physics - Tue, 05/12/2017 - 00:00

Quantum spin liquids: To be or not to be

Quantum spin liquids: To be or not to be, Published online: 05 December 2017; doi:10.1038/nphys4335

Quantum spin liquids: To be or not to be

Portraits of physicists

Nature Physics - Tue, 05/12/2017 - 00:00

Portraits of physicists

Portraits of physicists, Published online: 05 December 2017; doi:10.1038/nphys4324

Portraits of physicists

Heisenberg's uncertain legacy

Nature Physics - Tue, 05/12/2017 - 00:00

Heisenberg's uncertain legacy

Heisenberg's uncertain legacy, Published online: 05 December 2017; doi:10.1038/nphys4330

Heisenberg's uncertain legacy

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials

Nature Physics - Tue, 05/12/2017 - 00:00

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials, Published online: 05 December 2017; doi:10.1038/nphys4328

Erratum: Structural and quantum-state phase transitions in van der Waals layered materials

Ligand-field helical luminescence in a 2D ferromagnetic insulator

Nature Physics - Mon, 04/12/2017 - 00:00

Ligand-field helical luminescence in a 2D ferromagnetic insulator

Ligand-field helical luminescence in a 2D ferromagnetic insulator, Published online: 04 December 2017; doi:10.1038/s41567-017-0006-7

Atomically thin chromium tri-iodide is shown to be a 2D ferromagnetic insulator with an optical response dominated by ligand-field transitions, emitting circularly polarized photoluminescence with a helicity determined by the magnetization direction.

Attractive force on atoms due to blackbody radiation

Nature Physics - Mon, 04/12/2017 - 00:00

Attractive force on atoms due to blackbody radiation

Attractive force on atoms due to blackbody radiation, Published online: 04 December 2017; doi:10.1038/s41567-017-0004-9

The effect of blackbody radiation is expected to be very weak. The acceleration due to the attractive optical forces from blackbody radiation is measured in an atom interferometer and, surprisingly, it dominates gravity and radiation pressure

Strongly anisotropic spin relaxation in graphene–transition metal dichalcogenide heterostructures at room temperature

Nature Physics - Mon, 04/12/2017 - 00:00

Strongly anisotropic spin relaxation in graphene–transition metal dichalcogenide heterostructures at room temperature

Strongly anisotropic spin relaxation in graphene–transition metal dichalcogenide heterostructures at room temperature, Published online: 04 December 2017; doi:10.1038/s41567-017-0019-2

Large spin–orbit coupling can be induced when graphene interfaces with semiconducting transition metal dichalcogenides, leading to strongly anisotropic spin dynamics. As a result, orientation-dependent spin relaxation is observed.

Symmetry-breaking spirals

Nature Physics - Mon, 04/12/2017 - 00:00

Symmetry-breaking spirals

Symmetry-breaking spirals, Published online: 04 December 2017; doi:10.1038/s41567-017-0014-7

For a system to exhibit spiral patterns one would expect its parts to behave synchronously, as in a Mexican wave. Proving the contrary, chemical oscillators have now been observed in a state comprising a spiral surrounding an asynchronous core.

Topological valleytronics: Brought to light

Nature Physics - Mon, 04/12/2017 - 00:00

Topological valleytronics: Brought to light

Topological valleytronics: Brought to light, Published online: 04 December 2017; doi:10.1038/nphys4331

The topological valley Hall effect was predicted as a consequence of the bulk topology of electronic systems. Now it has been observed in photonic crystals, showing that both topology and valley are innate to classical as well as quantum systems.

Spiral wave chimera states in large populations of coupled chemical oscillators

Nature Physics - Mon, 04/12/2017 - 00:00

Spiral wave chimera states in large populations of coupled chemical oscillators

Spiral wave chimera states in large populations of coupled chemical oscillators, Published online: 04 December 2017; doi:10.1038/s41567-017-0005-8

A spiral chimera state, composed by an ordered spiral surrounding a core of asynchronous oscillators, is revealed in a large grid of chemical oscillators.

Statistical projection effects in a hydrodynamic pilot-wave system

Nature Physics - Mon, 27/11/2017 - 00:00

Statistical projection effects in a hydrodynamic pilot-wave system

Statistical projection effects in a hydrodynamic pilot-wave system, Published online: 27 November 2017; doi:10.1038/s41567-017-0003-x

Droplets moving on the surface of a vibrating fluid bath mimic the behaviour of electrons in quantum corrals. Introducing submerged features in the bath can even drive the droplets to excite modes that induce effects reminiscent of quantum mirages.

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