Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals

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The peak effect (PE) in the critical current density of type II superconductors has been related to an order-disorder transition in the vortex lattice (VL), but its underlying physics remains a controversial issue. Intrinsic to the PE are strong metastabilities that frequently mask the stationary VL...

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Autores principales: Pasquini, G., Daroca, D.P., Chiliotte, C., Lozano, G.S., Bekeris, V.
Formato: JOUR
Materias:
AC susceptibility measurements
Meta stability
Metastabilities
Order disorder transition (ODT)
Peak effects
Stable vortex
Type II superconductors
Vortex lattice (VL)
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v100_n24_p_Pasquini
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319007_v100_n24_p_Pasquini
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spelling todo:paper_00319007_v100_n24_p_Pasquini2023-10-03T14:42:00Z Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals Pasquini, G. Daroca, D.P. Chiliotte, C. Lozano, G.S. Bekeris, V. AC susceptibility measurements Meta stability Metastabilities Order disorder transition (ODT) Peak effects Stable vortex Type II superconductors Vortex lattice (VL) The peak effect (PE) in the critical current density of type II superconductors has been related to an order-disorder transition in the vortex lattice (VL), but its underlying physics remains a controversial issue. Intrinsic to the PE are strong metastabilities that frequently mask the stationary VL configurations. We follow shaking and thermal protocols in NbSe2 single crystals to access these configurations and examine them by linear ac susceptibility measurements that avoid VL reorganization. We identify three different regions. For T<T1(H), stable VL configurations are maximally ordered. For T>T2(H), configurations are fully disordered and no metastability is observed. In the T1<T<T2 region, we find temperature-dependent stable configurations with an intermediate degree of disorder, possibly associated with the coexistence of ordered and disordered lattices throughout the PE. © 2008 The American Physical Society. Fil:Pasquini, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Daroca, D.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319007_v100_n24_p_Pasquini
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic AC susceptibility measurements
Meta stability
Metastabilities
Order disorder transition (ODT)
Peak effects
Stable vortex
Type II superconductors
Vortex lattice (VL)
spellingShingle AC susceptibility measurements
Meta stability
Metastabilities
Order disorder transition (ODT)
Peak effects
Stable vortex
Type II superconductors
Vortex lattice (VL)
Pasquini, G.
Daroca, D.P.
Chiliotte, C.
Lozano, G.S.
Bekeris, V.
Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals
topic_facet AC susceptibility measurements
Meta stability
Metastabilities
Order disorder transition (ODT)
Peak effects
Stable vortex
Type II superconductors
Vortex lattice (VL)
description The peak effect (PE) in the critical current density of type II superconductors has been related to an order-disorder transition in the vortex lattice (VL), but its underlying physics remains a controversial issue. Intrinsic to the PE are strong metastabilities that frequently mask the stationary VL configurations. We follow shaking and thermal protocols in NbSe2 single crystals to access these configurations and examine them by linear ac susceptibility measurements that avoid VL reorganization. We identify three different regions. For T<T1(H), stable VL configurations are maximally ordered. For T>T2(H), configurations are fully disordered and no metastability is observed. In the T1<T<T2 region, we find temperature-dependent stable configurations with an intermediate degree of disorder, possibly associated with the coexistence of ordered and disordered lattices throughout the PE. © 2008 The American Physical Society.
format JOUR
author Pasquini, G.
Daroca, D.P.
Chiliotte, C.
Lozano, G.S.
Bekeris, V.
author_facet Pasquini, G.
Daroca, D.P.
Chiliotte, C.
Lozano, G.S.
Bekeris, V.
author_sort Pasquini, G.
title Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals
title_short Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals
title_full Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals
title_fullStr Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals
title_full_unstemmed Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals
title_sort ordered, disordered, and coexistent stable vortex lattices in nbse2 single crystals
url http://hdl.handle.net/20.500.12110/paper_00319007_v100_n24_p_Pasquini
work_keys_str_mv AT pasquinig ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals
AT darocadp ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals
AT chiliottec ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals
AT lozanogs ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals
AT bekerisv ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals
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