Search results for quantum materials

Condensed Matter Jun 14, 2024

Exploring the origin of polaron formation in halide perovskites

Halide perovskites are a class of materials with an underlying structure resembling that of mineral perovskites, but with X sites occupied by halide ions, while their A and B sites are occupied by cations. These materials ...

Nanophysics Jun 11, 2024

Switching nanomagnets using infrared lasers

When molecules are irradiated with infrared light, they begin to vibrate due to the energy supply. For Andreas Hauser from the Institute of Experimental Physics at Graz University of Technology (TU Graz), this well-known ...

Nanomaterials Jun 11, 2024

A chain of copper and carbon atoms may be the thinnest metallic wire

Researchers from the Laboratory for Theory and Simulation of Materials at EPFL in Lausanne, part of the NCCR MARVEL, have used computational methods to identify what could be the thinnest possible metallic wire, as well as ...

Condensed Matter Jun 13, 2024

Researchers tune Casimir force using magnetic fields

Research teams led by Prof. Zeng Changgan and Zhang Hui from the Hefei National Laboratory for Physical Sciences at the Microscale, the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences ...

Optics & Photonics Jun 14, 2024

Enhancement and manipulation of second- and third-harmonic generation based on all-dielectric nonlinear metasurfaces

Nonlinear optics is a branch of optics that deals with the complex nonlinear relationships between the optical response of the medium and the incident light when it interacts with the optical medium. Currently, nonlinear ...

Analytical Chemistry Jun 14, 2024

New photocatalytic COFs mimic photosynthesis for H₂O₂ production

National University of Singapore (NUS) chemists have developed hexavalent photocatalytic covalent organic frameworks (COFs) which mimic natural photosynthesis for the production of hydrogen peroxide (H2O2), an important industrial ...

Condensed Matter Jun 10, 2024

The impact of carbon impurities on the quality of gallium nitride crystals

The wide availability of light-emitting devices (LEDs) for consumer use has led to a dramatic decrease in the cost of lighting our homes and other buildings. This is owing to the much higher efficiency of LEDs in converting ...

Condensed Matter Jun 6, 2024

Researchers observe quantum critical Bose gas of magnons in quasi-2D antiferromagnet

Three-dimensional (3D) antiferromagnets are materials in which magnetic moments of atoms or ions are arranged in a 3D lattice structure with neighboring spins aligned in opposite directions. Physicists have observed a fascinating ...

Quantum Physics Jun 3, 2024

Physicists take molecules to a new ultracold limit, creating a state of matter where quantum mechanics reigns

There's a hot new BEC in town that has nothing to do with bacon, egg, and cheese. You won't find it at your local bodega, but in the coldest place in New York: the lab of Columbia physicist Sebastian Will, whose experimental ...

Nanomaterials May 21, 2024

New crystal production method could enhance quantum computers and electronics

In a study published in Nature Materials, scientists from the University of California, Irvine describe a new method to make very thin crystals of the element bismuth—a process that may aid the manufacturing of cheap flexible ...

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