Search results for phonons

Optics & Photonics Nov 7, 2023

'Hot' new form of microscopy examines materials using evanescent waves

Microscopes usually use backscattered radiation to create images, but a research group from the Institute of Industrial Science at the University of Tokyo is developing a new method to study materials using the faint light ...

Optics & Photonics Nov 3, 2023

Surface-specific nonlinear optical spectroscopy comes into terahertz range

Second order surface-specific nonlinear optical spectroscopy, e.g. sum-frequency spectroscopy, has made significant and continuous success in revealing the microscopic structures at surfaces/interfaces since the 1990s.

Condensed Matter Oct 28, 2023

Study uncovers giant fluctuation-enhanced phonon magnetic moments in a polar antiferromagnet

Phonons, quasi-particles associated with sounds or lattice vibrations, can carry momentum and angular momentum. However, these quasi-particles are commonly considered to possess negligible magnetic moments.

Condensed Matter Oct 26, 2023

Superatomic semiconductor sets a speed record for ballistic flow

Semiconductors—most notably, silicon—underpin the computers, cellphones, and other electronic devices that power our daily lives, including the device on which you are reading this article.

Superconductivity Oct 26, 2023

Researchers advance high-temperature superconductivity in carbon materials

In a study published in Advanced Science, researchers led by Prof. Zhong Guohua from the Shenzhen Institute of Advanced Technology (SIAT) of the Chinese Academy of Sciences (CAS) have made a prediction regarding superconductivity ...

Nanomaterials Oct 17, 2023

Insights into 2D materials from international collaboration

Roman Engel-Herbert, Director of PDI, and Joao Marcelo J. Lopes, a Senior Scientist at PDI, were honored recently with an invitation to review the field of two-dimensional layered materials (2DLM) in a paper for ACS Nano ...

Condensed Matter Oct 12, 2023

Phonon engineering for extended lasing beyond the fluorescence spectrum

The electron and phonon are two fundamental particles (quasi-particles) of condensed matter and their interplay in single crystals can create many interesting physical phenomena, such as polaritons, charge density waves and ...

Condensed Matter Oct 11, 2023

Realizing attosecond core-level X-ray spectroscopy for the investigation of condensed matter systems

The many-body interaction of charges (electrons) and nuclei (phonons) plays a critical role in determining the properties and functionalities of molecules and solids. The exact correlated motion of these particles gives rise ...

Analytical Chemistry Oct 9, 2023

Researchers reveal mechanism of efficient upconversion in two-dimensional perovskite

Recently, a research team led by Prof. Liu Xinfeng from the National Center for Nanoscience and Technology (NCNST) of the Chinese Academy of Sciences (CAS) reported the efficient phonon-assisted upconversion luminescence ...

Optics & Photonics Oct 4, 2023

How quantum light sees quantum sound

Researchers at the University of East Anglia have proposed a new way of using quantum light to "see" quantum sound.

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