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Effective Mass and Color Change

Article Abstract:

A report shows how high-transition temperature superconductors obey a sum rule in a new way. The studies discuss optical conductivity in terms of electrical absorptive response to weak electromagnetic fields. The research factors in spectral weight and electrons per unit volume in solids. Low frequencies are associated with the conduction band, and high frequencies will assist in creating conductivity. Various mathematical formulae are examined.

Author: Blumberg, G., Klein, M.V.

Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1999

Tests, problems and exercises, Superconductivity

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Flux lattice melting

Article Abstract:

Researchers have discovered that the flux lattices in high-transition temperature superconductors can melt into a flux liquid at a transition temperature below T(sub-c). The technique used in the experiment is discussed.

Author: Bishop, David J.

Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1996

Lattice dynamics

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Subjects list: Research, High temperature superconductors

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