Anomalous behavior of the second magnetization peak in La1.81 Sr0.19 CuO4 single crystals: Possible influence of two-band superconductivity

L. Miu, Y. Tanabe, T. Adachi, Y. Koike, D. Miu, G. Jakob, H. Adrian

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11 Citations (Scopus)

Abstract

We report an anomalous temperature T variation of the field Hon for the onset of the second magnetization peak in La1.81 Sr0.19 CuO4 single crystals with the external magnetic field H oriented parallel to the c axis. While the peak field Hp has a continuous decrease with increasing T, Hon exhibits a sudden decrease for T∼11-15K. This behavior appears to be related to the particular T dependence of the superfluid density in the case of two-band superconductivity affecting the T variation of the elastic energy of the vortex system at low H.

Original languageEnglish
Article number024520
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number2
DOIs
Publication statusPublished - 2008 Jul 29

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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