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

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, Gabriela, Pérez Daroca, Diego Raúl, Bekeris, Victoria Isabel
Publicado:	2008
Materias:	AC susceptibility measurements Meta stability Metastabilities Order disorder transition (ODT) Peak effects Stable vortex Type II superconductors Vortex lattice (VL)
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v100_n24_p_Pasquini 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	paper:paper_00319007_v100_n24_p_Pasquini
record_format	dspace
spelling	paper:paper_00319007_v100_n24_p_Pasquini2023-06-08T14:57:46Z Ordered, disordered, and coexistent stable vortex lattices in NbSe2 single crystals Pasquini, Gabriela Pérez Daroca, Diego Raúl Bekeris, Victoria Isabel 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. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v100_n24_p_Pasquini 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, Gabriela Pérez Daroca, Diego Raúl Bekeris, Victoria Isabel 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.
author	Pasquini, Gabriela Pérez Daroca, Diego Raúl Bekeris, Victoria Isabel
author_facet	Pasquini, Gabriela Pérez Daroca, Diego Raúl Bekeris, Victoria Isabel
author_sort	Pasquini, Gabriela
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
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v100_n24_p_Pasquini http://hdl.handle.net/20.500.12110/paper_00319007_v100_n24_p_Pasquini
work_keys_str_mv	AT pasquinigabriela ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals AT perezdarocadiegoraul ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals AT bekerisvictoriaisabel ordereddisorderedandcoexistentstablevortexlatticesinnbse2singlecrystals
_version_	1768543265935589376

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

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