Observation of the Vortex Glass-Vortex Liquid Transition in the YBa2Cu307 Sys t ernt
نویسندگان
چکیده
We have carried out a systematic study of the resistive transition, and the detailed I-V characteristic in magnetic fields of the YBa$&@ (YBCO) single crystals and highly c-axis oriented YBCO thin film prepared by the laser ablation technique. Our data can be well described in the context of the model proposed by Fisher et al.,’ suggest that the existence of the vortex glass (or solid) to vortex liquid transition in the YBCO system.
منابع مشابه
Vortex Glass Transition in High Tc Superconductor
Zhenhua Ning Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA (Dated: December 13, 2006) Abstract This paper tries to give a clear description of the motion of vortex and the vortex glass transitions in high Tc superconductors from both theoretical analysis and experimental observation. Then a controversy of the location of the vortex glass transition in ...
متن کاملTrace Analysis of Niflumic Acid in Milk and Human Plasma by Ion-pair-based Vortex Assisted Dispersive Liquid-liquid Microextraction Combined with UV-Vis Spectrophotometry
A simple, accurate and fast vortex-assisted dispersive liquid-liquid microextraction procedure has been developed for the extractive spectrophotometric determination of niflumic acid in biological samples. The method is based on the formation of an ion association complex between niflumic acid and methylene blue. The resulting ion-pair was extracted into dichloromethane and its absorbance was m...
متن کاملH-T phase diagram and the nature of Vortex-glass phase in a quasi two-dimensional superconductor: Sn metal layer sandwiched between graphene sheets
The magnetic properties of a quasi two-dimensional superconductor, Sn-metal graphite (MG), are studied using DC and AC magnetic susceptibility. Sn-MG has a unique layered structure where Sn metal layer is sandwiched between adjacent graphene sheets. This compound undergoes a superconducting transition at Tc = 3.75 K at H = 0. The H-T diagram of Sn-MG is similar to that of a quasi two-dimensiona...
متن کاملComment on "Vortex Glass and Lattice Melting Transitions in a YNi2B2C Single Crystal"
In a recent Letter [1], Mun et al. claim to observe vortex glass and lattice melting transitions in superconducting YNi2B2C. A key observation, which they associate with vortex lattice melting, is the presence of a sharp transition in the dc resistivity in finite dc magnetic field. Mun et al. arrive at an HT phase diagram with a single phase boundary which separates the vortex liquid from the v...
متن کاملMelting and structure of the vortex solid in strongly anisotropic layered superconductors with random columnar pins
We study the melting transition of the low-temperature vortex solid in strongly anisotropic layered superconductors with a concentration of random columnar pinning centers small enough so that the areal density of the pins is much less than that of the vortex lines. Both the external magnetic field and the columnar pins are assumed to be oriented perpendicular to the layers. Our method, involvi...
متن کامل