1999/12/09 by P. Chaddah, Chaddah, P., S. B. Roy +2
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Characterization and Applications of Magnetic Nanoparticles #FOS: Physical sciences #Fluid Dynamics and Turbulent Flows #Statistical Mechanics (cond-mat.stat-mech) #Superconductivity (cond-mat.supr-con) #cond-mat.stat-mech #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/9912148
Submitted to DAE(India) Solid state physics symposium. 11 pages(preprint) and 2 figures
arxiv created 1999/12/09 · openalex publication_date 1999/12/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We extend the classical theory for supercooling across first order phase transitions to the case when both density and temperature are control variables. The observable region of metastability then depends on the path followed in this space of two variables. Since the density of vortex matter in superconductors can be easily varied over a wide range by varying applied field, it is ideal for experimental tests. We found, in our studies on the `peak effect' in the mixed state of superconducting CeRu2, supercooled states whose observable region of metastability depends on the path followed in (H,T) space, consistent with our predictions. We also discuss phenomena in hard superconductors that are well understood within Bean's critical state model. We conclude that the path dependence of metastablity associated with hindered kinetics may be opposite to that predicted for metastability associated with supercooling across a first order transition.