Formation of columnar defects in high-Tc superconductors by swift heavy ions

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Abstract

Experimental data on the variation of the size of columnar defects with the electronic stopping power Se are analyzed for Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O. A model is applied that is based on the thermal spike concept and which was previously successfully used for irradiated insulating materials. The width of the thermal spike a (0) obtained from the analysis is 4.4 and 4.65 nm for Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O, respectively, which are in good agreement with the value for insulators. The fraction of the energy deposited to the thermal spike in the phonon system gSe is lower in high-Tc superconductors (HTCS's) than in insulators. This reduction is attributed to the anisotropy of the electron scattering. The model is suitable to predict the size of columnar defects in HTCS's.

Original languageEnglish
Pages (from-to)12458-12463
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume54
Issue number17
Publication statusPublished - Nov 1 1996

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Heavy Ions
Heavy ions
spikes
Superconducting materials
heavy ions
Defects
defects
insulators
Electron scattering
Insulating materials
stopping power
Power electronics
insulation
electron scattering
Anisotropy
anisotropy
electronics
Hot Temperature
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Formation of columnar defects in high-Tc superconductors by swift heavy ions. / Szenes, G.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 54, No. 17, 01.11.1996, p. 12458-12463.

Research output: Contribution to journalArticle

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