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Symmetry and Higher Superconductivity in the Lower Elements.

Authors :
Bianconi, Antonio
Ashcroft, N. W.
Source :
Symmetry & Heterogeneity in High Temperature Superconductors; 2006, p3-20, 18p
Publication Year :
2006

Abstract

At one atmosphere 29 elements are classified as superconductors; at high pressures there are to date an additional 23, many of these being drawn from the lighter elements. The number of superconductors for the elements in combination appears to be illimitable. Observed symmetries in these systems generally include orderings in both nuclear and electronic degrees of freedom. The fluctuations impelling order in the electron sub-system include those originating with the nuclear degrees of freedom but also with the electrons themselves, both itinerant and localized. For the elements in combination coherent multipole fluctuations in localized states may arise, and the relative contributions of such excitations to electron-pairing is then of some especial interest. When the elements are placed in combination the effects of external pressure may be replicated in part by an equivalent internal pressure, this resulting from a form of chemical pre-compression. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISBNs :
9781402039874
Database :
Supplemental Index
Journal :
Symmetry & Heterogeneity in High Temperature Superconductors
Publication Type :
Book
Accession number :
25995669
Full Text :
https://doi.org/10.1007/1-4020-3989-1•1