Publication

Temperature-Dependence of the Superconducting Gap Anisotropy in Bi2Sr2CaCu2O8+X

Giorgio Margaritondo, Helmuth Berger
1995
Journal Articles

Abstract

Detailed data on the momentum-resolved temperature dependence of the superconducting gap of Bi2Sr2CaCu2O8+x are presented, complemented by similar data on the intensity of the photoemission superconducting condensate spectral area. The gap anisotropy between the Gamma-(M) over bar and Gamma-X directions increases markedly with increasing temperature, contrary to what happens for conventional anisotropic-gap superconductors, such as lead. Specifically, the size of the superconducting gap along the Gamma-X direction decreases to values indistinguishable from zero at temperatures for which the gap retains virtually full value along the Gamma-(M) over bar direction. These data rule out the simplest type of d-wave order parameter.

Official source

https://infoscience.epfl.ch/entities/publication/9a3b62de-351d-4729-ae5c-bcd0da83bd4f

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Giorgio Margaritondo, Helmuth Berger
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9a3b62de-351d-4729-ae5c-bcd0da83bd4f

About this result

Related concepts (32)

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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 the Superconducting Gap Anisotropy in Bi2Sr2CaCu2O8+X

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