Superconducting coherence length

A Superconducting coherence length, usually denoted as ξ, can be interpreted in two different ways:

• It gives approximate spatial dimension (size) of the Cooper pair,
• It sets the length scale on which the superconducting order parameter changes considerably.

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The superconducting coherence length (ξ) is one of two parameters in a Ginzburg-Landau theory of superconductivity.

See also

• phenomenological Ginzburg-Landau theory of superconductivity
• microscopic BCS theory of superconductivity