Search results for phonons

Optics & Photonics Aug 3, 2021

Mott insulator exhibits a sharp response to electron injection

In a finding that will give theorists plenty to ponder, an all-RIKEN team has observed an unexpected response in an exotic material known as a Mott insulator when they injected electrons into it. This observation promises ...

General Physics Jul 29, 2021

Spin-sonics: Acoustic wave gets the electrons spinning

Researchers have detected the rolling movement of a nano-acoustic wave predicted by the famous physicist and Nobel prize winner Lord Rayleigh in 1885. This phenomenon can find applications in acoustic quantum technologies ...

Condensed Matter Jul 23, 2021

A new theory to explain the transparency of metallic oxides

The electrons of some metal oxides, due to their large effective mass when coupled with the ionic lattice of the material, cannot follow the electric field of light and allow it to pass through the material. Transparent and ...

Condensed Matter Jul 23, 2021

Buzz about thermoelectrics heats up with promising new magnesium-based materials

The landing of NASA's Perseverance rover was another leap forward not only for space exploration but also for the technology that's powering the craft on its years-long mission on Mars—a thermoelectric generator that turns ...

Nanophysics Jul 14, 2021

New mechanism of superconductivity discovered in graphene

Superconductivity is a physical phenomenon where the electrical resistance of a material drops to zero under a certain critical temperature. Bardeen-Cooper-Schrieffer (BCS) theory is a well-established explanation that describes ...

Superconductivity Jul 13, 2021

The demonstration of ultrafast switching to an insulating-like metastable state

In recent years, physicists and electronics engineers have been trying to devise strategies to control or produce quantum states of matter in different materials. Such strategies could ultimately prove valuable for the development ...

Superconductivity Jul 12, 2021

Reviewing pressure effects on iron-based high-temperature superconductors

The discovery of iron-based superconductors with a relatively high transition temperature Tc in 2008 opened a new chapter in the development of high-temperature superconductivity.

Superconductivity Jul 5, 2021

Researchers discover unusual competition between charge density wave and superconductivity

A research team led by Prof. Chen Xianhui from University of Science and Technology of China of the Chinese Academy of Sciences (CAS) found an unusual competition between charge density wave (CDW) and superconductivity in ...

Optics & Photonics Jun 18, 2021

Graphene drum: A new phonon laser design

Professor Konstantin Arutyunov of the HSE Tikhonov Moscow Institute of Electronics and Mathematics (MIEM HSE), together with Chinese researchers, has developed a graphene-based mechanical resonator, in which coherent emission ...

Bio & Medicine Jun 16, 2021

Graphene can be used to detect COVID-19 quickly, accurately

Researchers at the University of Illinois Chicago have successfully used graphene—one of the strongest, thinnest known materials—to detect the SARS-CoV-2 virus in laboratory experiments. The researchers say the discovery ...

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