Publication

Latest photoemission developments: Time resolution, microanalysis, order parameters

Giorgio Margaritondo
1997
Journal Articles

Abstract

The third generation sources of soft X-rays, ALS and ELETTRA, have been producing data in surface and interface science for over two years. The impact of their ultrahigh brightness is quite evident, particularly as far as photoemission techniques are concerned. We illustrate this point with a short review of very recent examples from ELETTRA, in the specific domains of time resolution, high lateral resolution and high energy resolution.

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Giorgio Margaritondo
1997
Journal Articles

Abstract

Official source

Related concepts (32)

X-ray photoelectron spectroscopy

X-ray photoelectron spectroscopy (XPS) is a surface-sensitive quantitative spectroscopic technique based on the photoelectric effect that can identify the elements that exist within a material (elemental composition) or are covering its surface, as well as their chemical state, and the overall electronic structure and density of the electronic states in the material. XPS is a powerful measurement technique because it not only shows what elements are present, but also what other elements they are bonded to.

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Big data primarily refers to data sets that are too large or complex to be dealt with by traditional data-processing application software. Data with many entries (rows) offer greater statistical power, while data with higher complexity (more attributes or columns) may lead to a higher false discovery rate. Though used sometimes loosely partly because of a lack of formal definition, the interpretation that seems to best describe big data is the one associated with a large body of information that we could not comprehend when used only in smaller amounts.

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Photoemission spectroscopy (PES), also known as photoelectron spectroscopy, refers to energy measurement of electrons emitted from solids, gases or liquids by the photoelectric effect, in order to determine the binding energies of electrons in the substance. The term refers to various techniques, depending on whether the ionization energy is provided by X-ray, XUV or UV photons. Regardless of the incident photon beam, however, all photoelectron spectroscopy revolves around the general theme of surface analysis by measuring the ejected electrons.

Related publications (32)

Latest photoemission developments: Time resolution, microanalysis, order parameters

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