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Pairing Phase Transition in Small Particles

✍ Scribed by B. Lauritzen; A. Anselmino; P.F. Bortignon; R.A. Broglia

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
461 KB
Volume
223
Category
Article
ISSN
0003-4916

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✦ Synopsis

A formulation of the pairing phase transition is presented which takes into account both thermal and quantal fluctuations, within the framework of the static path approximation with quadratic corrections. The theory is applied to the study of small superconducting particles, where it provides an overall account of the experimental findings. It is shown that the phase transition is well accounted for in the static path approximation, while the quadratic corrections are significant only for very small particles. A: 1993 Academic Press. Inc

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The study of low-temperature X-ray diffraction and magnetic properties of \(\mathrm{VO}_{2}(B)\) has revealed a structural phase transition and formation of \(\mathrm{V}^{4+}\) ion pairs. The phase transition occurs over a temperature range from 300 to \(180 \mathrm{~K}\); however, a complete struct