Effects of sample size on the second magnetization peak in Bi 2Sr2CaCuO8+δ at low temperatures

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Abstract

Effects of sample size on the second magnetization peak (SMP) in Bi 2Sr2CaCuO8+δ crystals are observed at low temperatures, above the temperature where the SMP totally disappears. In particular, the onset of the SMP shifts to lower fields as the sample size decreases - a result that could be interpreted as a size effect in the order-disorder vortex matter phase transition. However, local magnetic measurements trace this effect to metastable disordered vortex states, revealing the same order-disorder transition induction in samples of different size.

Original languageEnglish
Pages (from-to)141-147
Number of pages7
JournalPramana - Journal of Physics
Volume66
Issue number1
DOIs
StatePublished - Jan 2006

Bibliographical note

Funding Information:
The authors would like to thank Tsuyoshi Tamegai for providing us with the Bi2Sr2CaCu2O8+δ crystal. AS acknowledges support from the German–Israel Foundation (GIF). YY acknowledges support from the Wolfson Foundation. This research is supported by the ISF Center of Excellence Program (Grant No. 8003/02) and the Heinrich Hertz Minerva Center for High Temperature Superconductivity.

Funding

The authors would like to thank Tsuyoshi Tamegai for providing us with the Bi2Sr2CaCu2O8+δ crystal. AS acknowledges support from the German–Israel Foundation (GIF). YY acknowledges support from the Wolfson Foundation. This research is supported by the ISF Center of Excellence Program (Grant No. 8003/02) and the Heinrich Hertz Minerva Center for High Temperature Superconductivity.

FundersFunder number
German–Israel Foundation
Heinrich Hertz Minerva Center
ISF Center of Excellence Program8003/02
Wolfson Foundation

    Keywords

    • BSCCO
    • Phase transition
    • Vortex matter

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