Publication

Scaling between superconducting critical temperature and structural coherence length in TBa2Cu3O6.9 films

Davor Pavuna
2000
Journal Articles

Abstract

Measurements of critical temperature T-c in superconducting YBa2Cu3O6.9 films with reduced long-range structural order show the validity of the empirical scaling relation Delta T-c proportional to r(c)(-2) between disorder-induced reduction of T-c and structural coherence length r(c) in the ab-plane. This result is quantitatively explained by the disorder-induced confinement of the charge carriers within each ordered domain of size r(c). Our analysis of the data based on this picture enables us to precisely determine the Ginzburg-Landau superconducting coherence length in the ab-plane, xi(a)b = 1.41 +/- 0.04 nm.

Official source

https://infoscience.epfl.ch/entities/publication/1a637083-4317-4f2c-ba7a-7767e0857e20

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Davor Pavuna
2000
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/1a637083-4317-4f2c-ba7a-7767e0857e20

About this result

Related concepts (32)

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.

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.

Related publications (3)

Scaling between superconducting critical temperature and structural coherence length in TBa2Cu3O6.9 films

Chat with Graph Search

Spin excitations near the pressure-induced antiferromagnetic transition in SrCu2(BO3)2

Many-body calculation of the spatial extent of the wave function of a nonmagnetic impurity in a d-wave high-temperature superconductor using the t-J model

Evidence for an incommensurate magnetic resonance in La2-xSrxCuO4