Manifestations of twin boundaries in martensites and in superconductors

Baruch Horovitz

doi:10.1016/0379-6779(89)90954-5

Manifestations of twin boundaries in martensites and in superconductors

Baruch Horovitz

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A variety of physical properties of martensites in general and of Y₁Ba₂Cu₃O_x in particular are correlated with statics and dynamics of twin-boundaries. The quasi two-dimensional oscillations of twin boundaries ("dyadons") yield a T² term in the low temperature specific heat. Electron-dyadon coupling contributes to the linear temperature dependence of the normal state resistivity. This coupling may enhance T_c if the superconductivity mechanism is a strong coupling and a strongly retarded one. Twin boundaries can form Josephson junctions and account for nonlinear current-voltage relation and extreme sensitivity to magnetic fields close to T_c.

Original language	English
Pages (from-to)	575-584
Number of pages	10
Journal	Synthetic Metals
Volume	29
Issue number	2-3
DOIs	https://doi.org/10.1016/0379-6779(89)90954-5
State	Published - 21 Mar 1989

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/0379-6779(89)90954-5

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AB - A variety of physical properties of martensites in general and of Y1Ba2Cu3Ox in particular are correlated with statics and dynamics of twin-boundaries. The quasi two-dimensional oscillations of twin boundaries ("dyadons") yield a T2 term in the low temperature specific heat. Electron-dyadon coupling contributes to the linear temperature dependence of the normal state resistivity. This coupling may enhance Tc if the superconductivity mechanism is a strong coupling and a strongly retarded one. Twin boundaries can form Josephson junctions and account for nonlinear current-voltage relation and extreme sensitivity to magnetic fields close to Tc.

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Manifestations of twin boundaries in martensites and in superconductors

Abstract

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