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Search results for zero-energy quasiparticles

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, ...

Nanomaterials Jul 25, 2019

Giant gate-tunable bandgap renormalization and excitonic effects in a 2-D semiconductor

Investigating the remarkable excitonic effects in two-dimensional (2-D) semiconductors and controlling their exciton binding energies can unlock the full potential of 2-D materials for future applications in photonic and ...

General Âé¶¹ÒùÔºics Jun 26, 2019

Chiral zero sound found in Weyl semimetals

A pair of researchers at the Hong Kong University of Science and Technology has found that a chiral zero sound (CZS) effect can be induced in Weyl semimetals. In their paper published in the journal Âé¶¹ÒùÔºical Review Letters, ...

Quantum Âé¶¹ÒùÔºics Jun 13, 2019

Mysterious Majorana quasiparticle is now closer to being controlled for quantum computing

As mysterious as the Italian scientist for which it is named, the Majorana particle is one of the most compelling quests in physics.

Quantum Âé¶¹ÒùÔºics Apr 1, 2019

Putting a new spin on Majorana fermions

The combination of different phases of water—solid ice, liquid water, and water vapor—would require some effort to achieve experimentally. For instance, if you wanted to place ice next to vapor, you would have to continuously ...

General Âé¶¹ÒùÔºics Mar 28, 2019

Studying chiral exchange drag and chirality oscillations in synthetic antiferromagnets

A quasiparticle is a disturbance or excitation (e.g. spin waves, bubbles, etc.) that behaves as a particle and could therefore be regarded as one. Long-range interactions between quasiparticles can give rise to a 'drag,' ...

General Âé¶¹ÒùÔºics Mar 15, 2019

Exploring the behavior of a gas as it transitions between quantum and classical states

A team of researchers from the MIT-Harvard Center for Ultracold Atoms has developed a way to study and measure gases as they transition between quantum and classical states due to changes in temperature. In their paper published ...

Plasma Âé¶¹ÒùÔºics Mar 13, 2019

Quantum-critical conductivity of the Dirac fluid in graphene

Graphene is expected to behave like a quantum-critical, relativistic plasma known as "Dirac fluid" near charge neutrality in which massless electrons and holes rapidly collide. In a recent study now published in Science, ...

Nanophysics Feb 25, 2019

Graphite offers up new quantum surprise

Researchers at The University of Manchester in the UK, led by Dr. Artem Mishchenko, Prof Volodya Fal'ko and Prof Andre Geim, have discovered the quantum Hall effect in bulk graphite—a layered crystal consisting of stacked ...

Nanophysics Jan 23, 2019

Taking magnetism for a spin: Exploring the mysteries of skyrmions

Scientists at the U.S. Department of Energy's Ames Laboratory have discovered the relaxation dynamics of a zero-field state in skyrmions, a spinning magnetic phenomenon that has potential applications in data storage and ...

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