Âé¶¹ÒùÔº

Search results for time-reversal symmetry

Condensed Matter Jul 22, 2022

The observation of Chern mosaic and Berry-curvature magnetism in magic angle graphene

Researchers at the Weizmann Institute of Science, the Barcelona Institute of Science and Technology and the National Institute for Material Science in Tsukuba (Japan) have recently probed a Chern mosaic topology and Berry-curvature ...

Optics & Photonics Jun 15, 2022

All-optical switching on a nanometer scale

Ultrafast light-driven control of magnetization on the nanometer length scale is key to achieve competitive bit sizes in next generation data storage technology. Researchers at Max Born Institute in Berlin and of the large ...

Optics & Photonics Jun 1, 2022

Time-reversal asymmetry surpasses conversion efficiency limit for solar cells

Solar energy is a popular candidate for a sustainable alternative to fossil fuels. A solar cell, or photovoltaic (PV) cell, converts sunlight directly into electricity. However, the conversion efficiency has not been enough ...

General Âé¶¹ÒùÔºics Jun 1, 2022

Discovery of new mechanisms to control the flow of sound

Using a network of vibrating nano-strings controlled with light, researchers from AMOLF have made sound waves move in a specific irreversible direction and attenuated or amplified the waves in a controlled manner for the ...

General Âé¶¹ÒùÔºics May 30, 2022

Chip-scale Floquet topological insulators to enhance 5G wireless communications

Floquet topological insulators are materials with topological phases that originate from tailored time-dependent perturbations of their crystal structure. These materials have been proved to feature highly unusual electron ...

Quantum Âé¶¹ÒùÔºics May 25, 2022

Revisiting the history of the CPT theorem

A new review looks at an important and often overlooked aspect of physics that suggested symmetry in the particle zoo and how it could be broken.

Superconductivity Apr 27, 2022

Discovery of the one-way superconductor, thought to be impossible

Associate professor Mazhar Ali and his research group at TU Delft have discovered one-way superconductivity without magnetic fields, something that was thought to be impossible ever since its discovery in 1911—up until ...

Nanophysics Apr 5, 2022

New parity-time symmetric system opens up range of wavelengths to researchers, engineers

Researchers from the labs of Lan Yang, the Edwin H. & Florence G. Skinner Professor, and Xuan "Silvia" Zhang, associate professor, at the McKelvey School of Engineering at Washington University in St. Louis, have developed ...

Condensed Matter Mar 7, 2022

All-optical attoclock for imaging tunnelling wavepackets

Âé¶¹ÒùÔºicists can study the possible time delays of light-induced tunneling of an electron from an atom after conducting measurements of time delays when cold atoms tunnel through an optically created potential barrier. In a ...

Quantum Âé¶¹ÒùÔºics Feb 28, 2022

Âé¶¹ÒùÔºicists report on 'quantum boomerang' effect in disordered systems

Âé¶¹ÒùÔºicists at UC Santa Barbara have become the first to experimentally observe a quirky behavior of the quantum world: a "quantum boomerang" effect that occurs when particles in a disordered system are kicked out of their ...

page 9 from 31