Publication

Magnetic interactions and electronic states in superconducting and nonsuperconducting ruthenocuprates

Giorgio Margaritondo, Daniel Ariosa Dupont, Luca Perfetti, Alessandra Reginelli
2002
Journal Articles

Abstract

We measured polycrystalline samples of SrRuO3 and both superconducting and nonsuperconducting (hydrogen loaded) ruthenocuprates-Eu1.5Ce0.5RuSr2Cu2O10-x (Ru-1222)-samples using ac susceptibility, Ru 3p x-ray photoemission and Ru 2p x-ray-absorption measurements. The superconducting-and metallic-ruthenocuprate samples exhibit significant ferromagnetic fluctuations above the highest magnetic ordering temperature. The (Ru 3p) core level of the SrRuO3, and superconducting ruthenocuprate samples indicate that the (Ru) layers are metallic.

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https://infoscience.epfl.ch/entities/publication/dc3be6da-6e29-4ef8-84ee-da1c177a4c8c

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Giorgio Margaritondo, Daniel Ariosa Dupont, Luca Perfetti, Alessandra Reginelli
2002
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dc3be6da-6e29-4ef8-84ee-da1c177a4c8c

About this result

Related concepts (27)

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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In electromagnetism, the magnetic susceptibility (; denoted χ, chi) is a measure of how much a material will become magnetized in an applied magnetic field. It is the ratio of magnetization M (magnetic moment per unit volume) to the applied magnetizing field intensity H. This allows a simple classification, into two categories, of most materials' responses to an applied magnetic field: an alignment with the magnetic field, χ > 0, called paramagnetism, or an alignment against the field, χ < 0, called diamagnetism.

Magnetic moment

In electromagnetism, the magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. Examples of objects that have magnetic moments include loops of electric current (such as electromagnets), permanent magnets, elementary particles (such as electrons), composite particles (such as protons and neutrons), various molecules, and many astronomical objects (such as many planets, some moons, stars, etc).

Related publications (32)

Magnetic interactions and electronic states in superconducting and nonsuperconducting ruthenocuprates

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