Peak effect in CeRu${}_2$:history dependence and supercooling

Abstract

We present experimental results on single crystal CeRu${}_2$ showing that the extent of history dependence of peak-effect depends on the path followed in the space of field (H) and temperature (T). The (H,T) regime over which history effect is observed is larger if the vortex lattice is prepared by lowering T from above T${}_C$ in constant H i.e. by field cooling. We compare this history effect with the very recently reported history dependence of peak-effect in detwinned single crystals of YBaCuO, highlighting the similarities and differences. We discuss the possibility of a first order vortex solid-solid transition in CeRu${}_2$ within the realm of recent theoretical developments in the field of vortex matter.

21 pages, 5 figures; submitted to Phys. Rev. B on 9th Feb. 2000

References in corpus (6)

• Supercooling of the disordered vortex lattice in Bi_2Sr_2CaCu_2O_8+d
• Dislocations and the critical endpoint of the melting line of vortex line lattices
• Supercooling across first-order phase transitions in vortex matter
• A study of supercooling of the disordered vortex phase via minor hysteresis loops in 2H-NbSe_2
• Exotic ground states and impurities in multiband superconductors
• History dependence of peak effect in CeRu${}_2$ and V${}_3$Si: an analogy with the random field Ising systems

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• Thermal fluctuations and vortex melting in the classical superconductor Nb3Sn from high-resolution specific-heat measurements
• Disorder and thermally driven vortex-lattice melting in La{2-x}Sr{x}CuO{4} crystals
• Disorder-induced two-step melting of vortex matter in Co-intercalated NbSe${}_2$ single crystals
• Studies on Magnetic-field induced first-order transitions
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• Peak Effect in Superconductors: Absence of Phase Transition and Possibility of Jamming in Vortex Matter
• Magnetic field induced enlargement of the regime of critical fluctuations in the classical superconductor V3Si from high-resolution specific heat experiments
• Calculation of minor hysteresis loops under metastable to stable transformations in vortex matter