Publication

Coexisting one-dimensional and three-dimensional spectral signatures in TaTe4

Giorgio Margaritondo, László Forró, Helmuth Berger, Marco Grioni
1999
Journal Articles

Abstract

Using angle-resolved photoemission spectroscopy, we probe the electronic band structure of TaTe4 single crystal samples. Resistivity and optical measurements were also performed on the same samples. The experimental data indicate a combination of quasi-one-dimensional and three-dimensional electronic properties. We observe a finite spectral intensity, but no dispersing quasiparticle states near the chemical potential. [S0163-1829(99)06611-4].

Official source

https://infoscience.epfl.ch/entities/publication/ae337b0a-3925-465c-ab74-875e6e0fb5f0

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Giorgio Margaritondo, László Forró, Helmuth Berger, Marco Grioni
1999
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ae337b0a-3925-465c-ab74-875e6e0fb5f0

About this result

Related concepts (32)

Angle-resolved photoemission spectroscopy

Angle-resolved photoemission spectroscopy (ARPES) is an experimental technique used in condensed matter physics to probe the allowed energies and momenta of the electrons in a material, usually a crystalline solid. It is based on the photoelectric effect, in which an incoming photon of sufficient energy ejects an electron from the surface of a material. By directly measuring the kinetic energy and emission angle distributions of the emitted photoelectrons, the technique can map the electronic band structure and Fermi surfaces.

Electronic band structure

In solid-state physics, the electronic band structure (or simply band structure) of a solid describes the range of energy levels that electrons may have within it, as well as the ranges of energy that they may not have (called band gaps or forbidden bands). Band theory derives these bands and band gaps by examining the allowed quantum mechanical wave functions for an electron in a large, periodic lattice of atoms or molecules.

Photoemission spectroscopy

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)

Coexisting one-dimensional and three-dimensional spectral signatures in TaTe4

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