Inhaltszusammenfassung

We report an anomalous temperature T variation of the field Hon for the onset of the second magnetization peak in La1.81Sr0.19CuO4 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?15?K. 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...We report an anomalous temperature T variation of the field Hon for the onset of the second magnetization peak in La1.81Sr0.19CuO4 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?15?K. 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. » weiterlesen» einklappen

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Klassifikation

DFG Fachgebiet:
Physik der kondensierten Materie

DDC Sachgruppe:
Physik