Publication

Quasiparticle scattering processes in a model Fermi liquid: 1T-TiTe2

Giorgio Margaritondo, Helmuth Berger, Marco Grioni, Luca Perfetti, Alessandra Reginelli
2002
Journal Articles

Abstract

We performed angle-resolved photoelectron spectroscopy (ARPES) and resistivity measurements on the layered metal 1T-TiTe2. We determined the quasiparticle dispersion and lifetime. In particular, we could characterize and separately evaluate the effects of the electron-electron and electron-phonon interactions on the experimental spectra. The good correlation between transport and spectroscopic scattering rates indicates that this material behaves as a model Fermi liquid system.

Official source

https://infoscience.epfl.ch/entities/publication/2e2b3769-32e8-4a28-8216-11912d4c16d9

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Giorgio Margaritondo, Helmuth Berger, Marco Grioni, Luca Perfetti, Alessandra Reginelli
2002
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2e2b3769-32e8-4a28-8216-11912d4c16d9

About this result

Related concepts (32)

Spectroscopy

Spectroscopy is the field of study that measures and interprets the electromagnetic spectra that result from the interaction between electromagnetic radiation and matter as a function of the wavelength or frequency of the radiation. Matter waves and acoustic waves can also be considered forms of radiative energy, and recently gravitational waves have been associated with a spectral signature in the context of the Laser Interferometer Gravitational-Wave Observatory (LIGO).

Free electron model

In solid-state physics, the free electron model is a quantum mechanical model for the behaviour of charge carriers in a metallic solid. It was developed in 1927, principally by Arnold Sommerfeld, who combined the classical Drude model with quantum mechanical Fermi–Dirac statistics and hence it is also known as the Drude–Sommerfeld model.

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In physics, chemistry, and electronic engineering, an electron hole (often simply called a hole) is a quasiparticle denoting the lack of an electron at a position where one could exist in an atom or atomic lattice. Since in a normal atom or crystal lattice the negative charge of the electrons is balanced by the positive charge of the atomic nuclei, the absence of an electron leaves a net positive charge at the hole's location. Holes in a metal or semiconductor crystal lattice can move through the lattice as electrons can, and act similarly to positively-charged particles.

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Quasiparticle scattering processes in a model Fermi liquid: 1T-TiTe2

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