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Title: Disordering transitions in vortex matter: Peak effect and phase diagram

Abstract

Using numerical simulations of magnetically interacting vortices in disordered layered superconductors we obtain the static vortex phase diagram as a function of magnetic field and temperature. For increasing field or temperature, we find a transition from ordered straight vortices to disordered decoupled vortices. This transition is associated with a peak effect in the critical current as well as plastic flow of the vortices. For samples with increasing disorder strength the field at which the decoupling occurs decreases. Long range interactions in the c-axis are required to observe the effect.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director. Office of Advanced Scientific Computing Research. Mathematical Information and Computational Sciences Division; CLC and CULAR; National Science Foundation Contract DMR-9985978 (US)
OSTI Identifier:
834421
Report Number(s):
LBNL-46710
R&D Project: K11503; TRN: US0407118
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Physica C-Superconductivity and Its Applications
Additional Journal Information:
Journal Volume: 384; Journal Issue: 1-2; Other Information: Journal Publication Date: 01/15/2003; PBD: 1 Aug 2000
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRITICAL CURRENT; DECOUPLING; INTERACTION RANGE; MAGNETIC FIELDS; PHASE DIAGRAMS; PLASTICS; SUPERCONDUCTORS; VORTICES; DISORDER TRANSTITION VORTEX MATTER PEAK EFFECT PHASE DIAGRAM

Citation Formats

Olson, C J, Reichhardt, C, Zimanyi, G T, and Gronbech-Jensen, Niels. Disordering transitions in vortex matter: Peak effect and phase diagram. United States: N. p., 2000. Web.
Olson, C J, Reichhardt, C, Zimanyi, G T, & Gronbech-Jensen, Niels. Disordering transitions in vortex matter: Peak effect and phase diagram. United States.
Olson, C J, Reichhardt, C, Zimanyi, G T, and Gronbech-Jensen, Niels. 2000. "Disordering transitions in vortex matter: Peak effect and phase diagram". United States.
@article{osti_834421,
title = {Disordering transitions in vortex matter: Peak effect and phase diagram},
author = {Olson, C J and Reichhardt, C and Zimanyi, G T and Gronbech-Jensen, Niels},
abstractNote = {Using numerical simulations of magnetically interacting vortices in disordered layered superconductors we obtain the static vortex phase diagram as a function of magnetic field and temperature. For increasing field or temperature, we find a transition from ordered straight vortices to disordered decoupled vortices. This transition is associated with a peak effect in the critical current as well as plastic flow of the vortices. For samples with increasing disorder strength the field at which the decoupling occurs decreases. Long range interactions in the c-axis are required to observe the effect.},
doi = {},
url = {https://www.osti.gov/biblio/834421}, journal = {Physica C-Superconductivity and Its Applications},
number = 1-2,
volume = 384,
place = {United States},
year = {2000},
month = {8}
}