Sentences with phrase «of photoemission»

By measuring this change in speed, the researchers were able to establish the duration of the photoemission event with zeptosecond precision.

In the future these processes shall be treated in a unified approach and the thus improved theory of photoemission will open new possibilities to experimentally test and improve our understanding of the very fundamental process of photoemission.

This observation required a revision of common theoretical models describing the photoemission from solids, i.e. this initial intra-atomic interaction had to be taken into account and sets a new cornerstone for future improved models of the photoemission process from solids.

Based on an improved understanding of the photoemission process itself this will serve in future experiments to resolve variations of light fields with sub-atomic resolution, i.e. on a scale that was not accessible up to now.

Not exact matches

Some aspects of this phenomenon, namely the linear dependence of the particles» energy on their momentum, can be directly measured and visualized using angle - resolved photoemission spectroscopy (ARPES).

Direct photoemission evidence is presented of filling of bands derived from the lowest unoccupied molecular orbital as a function of K incorporation for the metallic and insulating phases.

These are electronic structures of Ce monopnictides which observed by soft X-ray angle - resolved photoemission spectroscopy, and its topological phase transition.

The conductivity and other transport properties as a function of disorder, temperature, and frequency point to a non-Fermi liquid - like behavior, whereas photoemission experiments and magnetic properties indicate the presence of a Fermi surface in momentum space.

* 4) Angle - resolved photoemission spectroscopy An experimental technique to directly determine the energy and momentum of electrons in solids.

Then they carefully investigated the electronic structure of grown films by angle - resolved photoemission spectroscopy (ARPES) * 4.

The group of Majed Chergui at EPFL, along with national and international colleagues, have shed light on this long - standing question by using a combination of cutting - edge experimental methods: steady - state angle - resolved photoemission spectroscopy (ARPES), which maps the energetics of the electrons along the different axis in the solid; spectroscopic ellipsometry, which determines the optical properties of the solid with high accuracy; and ultrafast two - dimensional deep - ultraviolet spectroscopy, used for the first time in the study of materials, along with state - of - the - art first - principles theoretical tools.

Using a technique called angle - resolved photoemission spectroscopy (left), the researchers measured the energy and momentum of electrons as they were ejected from the cadmium arsenide.

The lab of Marco Grioni at EPFL used a spectroscopy technique called ARPES (angle - resolved photoemission spectroscopy), which allows researchers to «track» electron behavior in a solid material.

The high - purity samples were then studied at the ALS using a technique known as ARPES (or angle - resolved photoemission spectroscopy), which provides a powerful probe of materials» electron properties.

In ARPES, a beam of X-ray photons striking the material's surface causes the photoemission of electrons.

In the experiments, researchers used a technique called angle - resolved photoemission spectroscopy, or ARPES, to knock electrons out of a copper oxide material, one of a handful of materials that superconduct at relatively high temperatures — although they still have to be chilled to at least minus 135 degrees Celsius.

Explores the electronic structure and electrodynamics of topological insulators and strongly correlated electron systems, with particular attention to emergent phenomena, such as superconductivity and magnetism, using angle - resolved photoemission (ARPES) and optical spectroscopy.

The results show that the gap around the node at sufficiently low temperatures can be well described by a monotonic d - wave gap function for both samples and the... ▽ More The energy gap of optimally doped Bi2 (Sr, R) 2CuOy (R = La and Eu) was probed by angle resolved photoemission spectroscopy (ARPES) using a vacuum ultraviolet laser (photon energy 6.994 eV) or He I resonance line (21.218 eV) as photon source.

Abstract: The energy gap of optimally doped Bi2 (Sr, R) 2CuOy (R = La and Eu) was probed by angle resolved photoemission spectroscopy (ARPES) using a vacuum ultraviolet laser (photon energy 6.994 eV) or He I resonance line (21.218 eV) as photon source.

Since out - of - plane disorder stabilizes the antinodal pseudogap as was shown in our previous study of the normal state, the present results... ▽ More We found that the length of the Fermi arc decreases with increasing out - of - plane disorder by performing angle resolved photoemission spectroscopy (ARPES) measurements in the superconducting state of optimally doped R = La and Eu samples of Bi2Sr2 − xRxCuOy.