Search results for time-reversal symmetry

Nanophysics Jan 9, 2025

Domain wall fluctuations in 2D materials reveal a new mechanism of superconductivity

Two-dimensional (2D) van der Waals are made of atomically thin layers, held together by weak van der Waals forces. These materials have been the focus of numerous studies, as their unique properties make them ideal for studying ...

Condensed Matter Nov 6, 2024

Kagome superconductor breaks the rules at record-breaking temperatures

Using muon spin rotation at the Swiss Muon Source SmS, researchers at the Paul Scherrer Institute (PSI) have discovered that a quantum phenomenon known as time-reversal symmetry breaking occurs at the surface of the Kagome ...

Other Oct 26, 2024

Saturday Citations: Reading comprehension; revisiting tardigrade orthodoxy; restoring universal symmetry

This week, physicists suggested that quantum entanglement may be really, really fast rather than instantaneous, and could be measured at an attosecond scale. Paleontologists discovered a fossilized mammal in Colorado that ...

Astronomy Oct 24, 2024

Did the early cosmos balloon in size? A mirror universe going backwards in time may be a simpler explanation

We live in a golden age for learning about the universe. Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales. Likewise, our most powerful "microscope," the Large ...

Optics & Photonics Oct 19, 2024

All-optical switch device paves way for faster fiber-optic communication

Modern high-speed internet uses light to quickly and reliably transmit large amounts of data through fiber-optic cables, but currently, light signals hit a bottleneck when data processing is necessary. For that, they must ...

Political science Oct 18, 2024

How to spot AI deepfakes that spread election misinformation

Generative AI systems, such as ChatGPT, are trained on large datasets to create written, visual or audio content in response to prompts. When fed real images, some algorithms can produce fake photos and videos known as deepfakes.

Condensed Matter Oct 11, 2024

Physicists reveal nonlinear transport induced by quantum geometry in planar altermagnets

In recent years, many physicists and materials scientists have been studying a newly uncovered class of magnetic materials known as altermagnets. These materials exhibit a unique type of magnetism that differs from both conventional ...

Optics & Photonics Oct 2, 2024

Quantum research paves the way toward efficient, ultra-high-density optical memory storage

As our digital world generates massive amounts of data—more than 2 quintillion bytes of new content each day—yesterday's storage technologies are quickly reaching their limits. Optical memory devices, which use light to read ...

Analytical Chemistry Sep 18, 2024

Template synthesis creates multilayered perovskites with unique ferroelectric behavior

A group of Nagoya University researchers in Japan has synthesized 4- and 5-layered versions of the important electrical material perovskite. Analyzing the mechanism of ferroelectricity in the material, they found it has a ...

Optics & Photonics Jul 25, 2024

Nonreciprocal interactions go nonlinear: Non-Hermitian dynamics observed in coupled nanoparticles

Using two optically-trapped glass nanoparticles, researchers observed a novel collective Non-Hermitian and non-linear dynamic driven by non-reciprocal interactions. This contribution expands traditional optical levitation ...

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