Sentences with phrase «photoemission electron»

Not exact matches

In order to shed light on superconductivity in graphene, the scientists resorted to the powerful photoemission method: when a light particle interacts with a material it can transfer all its energy to an electron inside that material.

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

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 experimental techniques often used to study electrons, such as photoemission spectroscopy, have limitations, but until recently it was not thought to be feasible to measure the electronic...