Photoemission is a process during which electrons are ejected from a metal surface when exposed to electromagnetic radiation, (eg ultraviolet). If a clean, positively charged zinc plate is exposed ...

A photon has a frequency of \(6.4 \times 10^{14}Hz\). Calculate the energy of the photon. Light of frequency \(6.4\times 10^{14}Hz\) is used to illuminate negatively charged sodium (which has a ...

Photoemission spectroscopy (PES) is a powerful analytical technique used to study the electronic structure and chemical composition of materials. It is based on the photoelectric effect, where ...

"Angle-resolved photoemission spectroscopy is a powerful experimental technique for physicists to understand how electrons ...

Dark states are quantum states in which a system does not interact with external fields, such as light (i.e., photons) or electromagnetic fields. These states, which generally occur due to ...

Spintronics uses the spins of electrons to perform logic operations or store information. Ideally, spintronic devices could ...

Yang and co-workers found a very strong peak in the photoemission spectrum of tetramantanethiol monolayers at the lowest kinetic energy observed (about 1 eV). For monolayers grown on silver ...

FIGURE 1 shows the optical absorption spectrum ?(hv) of glow discharge a-Si:H [1, 2]. Also shown for comparison are the absorption spectra of c-Si [3] and hydrogen-free a-Si [4]. We are concerned here ...

For his monumental work in transforming our understanding of gravity and spacetime, Albert Einstein won his sole Nobel Prize for something else: explaining the photoelectric effect. In the early ...

Spintronic devices work with spin textures caused by quantum-physical interactions. Scientists have now studied graphene-cobalt-iridium heterostructures at BESSY II. The results show how two desired ...

He then spent two years at the Argonne National Laboratory (USA) to perform angle resolved photoemission spectroscopy (ARPES) experiments, before taking over the neutron spectroscopy group at PSI.