Publication

Photoabsorption and core-level photoemission study of ruthocuprates

Giorgio Margaritondo, Daniel Ariosa Dupont, Luca Perfetti, Alessandra Reginelli
2000
Journal Articles

Abstract

We report on x-ray photoemission and absorption measurements on ruthocuprate and SrRuO3 samples. The ruthocuprates include samples that are both weak ferromagnets and superconductors for part of the phase diagram. The results indicate that adding hydrogen changes the many-body response on the CuO2 planes. The results further indicate that ferromagnetic order alters the core level states. We discuss implications of these data.

Official source

https://infoscience.epfl.ch/entities/publication/c04833f6-70e6-4dec-a8a7-8f3ac11fac38

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Giorgio Margaritondo, Daniel Ariosa Dupont, Luca Perfetti, Alessandra Reginelli
2000
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c04833f6-70e6-4dec-a8a7-8f3ac11fac38

About this result

Related concepts (32)

Ferromagnetism

Ferromagnetism is a property of certain materials (such as iron) that results in a significant, observable magnetic permeability, and in many cases, a significant magnetic coercivity, allowing the material to form a permanent magnet. Ferromagnetic materials are familiar metals that are noticeably attracted to a magnet, a consequence of their substantial magnetic permeability. Magnetic permeability describes the induced magnetization of a material due to the presence of an external magnetic field.

Diamagnetism

Diamagnetism is the property of materials that are repelled by a magnetic field; an applied magnetic field creates an induced magnetic field in them in the opposite direction, causing a repulsive force. In contrast, paramagnetic and ferromagnetic materials are attracted by a magnetic field. Diamagnetism is a quantum mechanical effect that occurs in all materials; when it is the only contribution to the magnetism, the material is called diamagnetic.

Curie temperature

In physics and materials science, the Curie temperature (TC), or Curie point, is the temperature above which certain materials lose their permanent magnetic properties, which can (in most cases) be replaced by induced magnetism. The Curie temperature is named after Pierre Curie, who showed that magnetism was lost at a critical temperature. The force of magnetism is determined by the magnetic moment, a dipole moment within an atom which originates from the angular momentum and spin of electrons.

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Photoabsorption and core-level photoemission study of ruthocuprates

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