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Search results for quasi-long-range order

Nanophysics Feb 19, 2020

A spin wave detective story: Researchers verify surprising behavior in a 2-D magnet

Researchers at the National Institute of Standards and Technology (NIST) have discovered a surprising feature in two-dimensional (2-D) magnets, a new class of materials receiving a great deal of attention. Their finding is ...

Nanophysics Feb 17, 2020

Perovskites reveal huge resettable single-photon response

Despite the progress in perovskite device efficiencies, these systems are not fully understood, in particular the frequency- and power-dependence of their response to light. Yu-Hwa Lo and colleagues at the University of California ...

Quantum Âé¶¹ÒùÔºics Nov 14, 2019

Quantum transition makes electrons behave as if they lack spin

The common phase transitions are those that occur as a function of temperature variation. Ice changes phase to become liquid water at 0 degrees Celsius. Liquid water changes phase to become water vapor at 100 degrees Celsius. ...

General Âé¶¹ÒùÔºics Sep 12, 2019

Dynamic charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor

Charge density fluctuations are observed in all families of high-critical temperature (Tc) superconducting cuprates. Although constantly found in the underdoped region of the phase diagram at relatively low temperatures, ...

General Âé¶¹ÒùÔºics Jun 14, 2019

Discovery of light-induced ferroelectricity in strontium titanate

Light can be used not only to measure materials' properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity ...

Quantum Âé¶¹ÒùÔºics Jun 13, 2019

Visualizing a quantum crystal: Imaging the electronic Wigner crystal in 1-D

When electrons that repel each other are confined to a small space, they can form an ordered crystalline state known as a Wigner crystal. Observing the fragile crystal is tricky, since it requires extreme conditions including ...

Optics & Photonics Dec 3, 2018

Covert infrared image encoding—hiding in plasmonic sight

Plasmonic materials can uniquely control the electromagnetic spectrum due to nano-scale surface architecture. Recent advances in nanotechnology and materials science and their combined capacity to develop controlled geometries ...

General Âé¶¹ÒùÔºics Aug 6, 2018

The marriage of topology and magnetism in a Weyl system

Topology is a global aspect of materials, leading to fundamental new properties for compounds with large relativistic effects. The incorporation of heavy elements gives rise to non-trivial topological phases of matter, such ...

General Âé¶¹ÒùÔºics Jun 12, 2018

A surprising twist on skyrmions

Vortex structures are common in nature, reaching from swirls in our morning coffee to spiral galaxies in the universe. Vortices are been best known from fluid dynamics. Take the example of a tornado. Air circulates around ...

Nanophysics Feb 2, 2018

Creating an electron-hole liquid at room temperature

Making a liquid out of electrons is complicated, but it opens the door to research in a wide variety of electronics. NC State physicists have created a phase diagram that can help researchers create this liquid at room temperature, ...

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