Publication

Temperature-Dependence of Electronic States in (Tase4)(2)I

Giorgio Margaritondo, Helmuth Berger
1995
Journal Articles

Abstract

Angle-resolved photoemissions studies were conducted on single-crystal (TaSe4)(2)I samples above and below the charge-density-wave transition temperature (T-CDW) of 260 K. We observed a shift of the leading photoemission edge between 300 and 60 K consistent with resistivity measurements performed on the same sample: a band gap opens throughout the Brillouin zone below T-CDW. However, several aspects of the data are difficult to reconcile with any standard model.

Official source

https://infoscience.epfl.ch/entities/publication/97662771-f4e3-4607-ac4e-fb01b4c71513

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Giorgio Margaritondo, Helmuth Berger
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/97662771-f4e3-4607-ac4e-fb01b4c71513

About this result

Related concepts (30)

Single crystal

In materials science, a single crystal (or single-crystal solid or monocrystalline solid) is a material in which the crystal lattice of the entire sample is continuous and unbroken to the edges of the sample, with no grain boundaries. The absence of the defects associated with grain boundaries can give monocrystals unique properties, particularly mechanical, optical and electrical, which can also be anisotropic, depending on the type of crystallographic structure.

Crystal

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography.

High-temperature superconductivity

High-temperature superconductors (abbreviated high-Tc or HTS) are defined as materials with critical temperature (the temperature below which the material behaves as a superconductor) above , the boiling point of liquid nitrogen. They are only "high-temperature" relative to previously known superconductors, which function at even colder temperatures, close to absolute zero. The "high temperatures" are still far below ambient (room temperature), and therefore require cooling.

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Temperature-Dependence of Electronic States in (Tase4)(2)I

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