Publication

Coexistence of ferromagnetism and high-temperature superconductivity in Dy-doped BiPbSrCaCuO

Giorgio Margaritondo, Helmuth Berger, Richard Gaal, Daniel Ariosa Dupont
2002
Journal Articles

Abstract

Ferromagnetism was found to coexist with superconductivity in Dy-doped BiPbSrCaCuO-2212 single crystals up to the superconducting critical temperature T-c similar to 80 X. Several experimental tests indicated that the phenomenon is intrinsic to the entire specimen rather than due to separate phases or to isolated impurities.

Official source

https://infoscience.epfl.ch/entities/publication/ab8d29de-f570-4048-855e-c5ffca7bd19d

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Giorgio Margaritondo, Helmuth Berger, Richard Gaal, Daniel Ariosa Dupont
2002
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ab8d29de-f570-4048-855e-c5ffca7bd19d

About this result

Related concepts (10)

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.

Superconductivity

Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic fields are expelled from the material. Any material exhibiting these properties is a superconductor. Unlike an ordinary metallic conductor, whose resistance decreases gradually as its temperature is lowered, even down to near absolute zero, a superconductor has a characteristic critical temperature below which the resistance drops abruptly to zero.

Unconventional superconductor

Unconventional superconductors are materials that display superconductivity which does not conform to conventional BCS theory or its extensions. The superconducting properties of CeCu2Si2, a type of heavy fermion material, were reported in 1979 by Frank Steglich. For a long time it was believed that CeCu2Si2 was a singlet d-wave superconductor, but since the mid 2010s, this notion has been strongly contested. In the early eighties, many more unconventional, heavy fermion superconductors were discovered, including UBe13, UPt3 and URu2Si2.

Related publications (25)

Coexistence of ferromagnetism and high-temperature superconductivity in Dy-doped BiPbSrCaCuO

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