Equilibrium magnetization in the vicinity of the first order phase transition in the mixed state of high-Tc superconductors
arXiv:cond-mat/0404340 · doi:10.1103/PhysRevB.71.012511
Abstract
We present the results of a scaling analysis of isothermal magnetization M(H) curves measured in the mixed state of high-Tc superconductors in the vicinity of the established first order phase transition. The most surprising result of our analysis is that the difference between the magnetization above and below the transition may have either sign, depending on the particular chosen sample. We argue that this observation, based on M(H) data available in the literature, is inconsistent with the interpretation that the well known first order phase transition in the mixed state of high-Tc superconductors always represents the melting transition in the vortex system.
4 pages, 5 figures
References in corpus (5)
- Temperature dependence of the upper critical field of type-II superconductors from isothermal magnetization data. Application to high temperature superconductors
- Temperature dependence of the upper critical field of high-Tc superconductors from isothermal magnetization data. Application to polycrystalline samples and ceramics
- Temperature dependence of the upper critical field of high-Tc superconductors from isothermal magnetization data. Influence of a temperature dependent Ginzburg-Landau parameter
- On the equilibrium magnetization of high-Tc superconductors below the irreversibility line
- Model of the mixed state of type-II superconductors in high magnetic fields