Publication

Unusual spectral signatures of organic 1D metals

Giorgio Margaritondo, Marco Grioni
1997
Journal Articles

Abstract

We have studied by high resolution angle resolved photoelectron spectroscopy the spectral properties of two metallic and one insulating Bechgaard salts, quasi-1D organic materials. The spectra of the metals show no dispersing quasiparticle peak crossing the Fermi level. Instead a deep pseudogap is observed. The spectral lineshape is incompatible with that of ''normal'' metals. The spectrum of the insulator exhibits a real energy gap.

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https://infoscience.epfl.ch/entities/publication/e32e80e8-d00b-4b6e-b366-1d8497899443

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Giorgio Margaritondo, Marco Grioni
1997
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/e32e80e8-d00b-4b6e-b366-1d8497899443

About this result

Related concepts (30)

Heavy metals

Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers. The criteria used, and whether metalloids are included, vary depending on the author and context. In metallurgy, for example, a heavy metal may be defined on the basis of density, whereas in physics the distinguishing criterion might be atomic number, while a chemist would likely be more concerned with chemical behaviour. More specific definitions have been published, none of which have been widely accepted.

Metal

A metal (from Ancient Greek μέταλλον métallon 'mine, quarry, metal') is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically ductile (can be drawn into wires) and malleable (they can be hammered into thin sheets). These properties are the result of the metallic bond between the atoms or molecules of the metal. A metal may be a chemical element such as iron; an alloy such as stainless steel; or a molecular compound such as polymeric sulfur nitride.

Post-transition metal

The metallic elements in the periodic table located between the transition metals to their left and the chemically weak nonmetallic metalloids to their right have received many names in the literature, such as post-transition metals, poor metals, other metals, p-block metals and chemically weak metals. The most common name, post-transition metals, is generally used in this article. Physically, these metals are soft (or brittle), have poor mechanical strength, and usually have melting points lower than those of the transition metals.

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