Small angle neutron scattering investigation of the magnetic history dependence of the vortex structure in the cubic (K,Ba)BiO3 superconductor

I. Joumard; T. Klein; S. Blanchard; J. Marcus; R. Cubitt

doi:10.1016/S0921-4534(01)01196-0

Small angle neutron scattering investigation of the magnetic history dependence of the vortex structure in the cubic (K,Ba)BiO₃ superconductor

I. Joumard
, T. Klein
, S. Blanchard
, J. Marcus
, R. Cubitt

École Polytechnique

Research output: Contribution to journal › Article › peer-review

Abstract

The influence of the magnetic history on the structure of the vortex solid has been investigated by small angle neutron scattering in the cubic (K,Ba)BiO₃ superconductor. The diffracted intensity strongly depends on the cooling procedure for 0.3<μ₀H<0.7T (at 2.5 K) showing that defects can be quenched into the vortex solid in this field range. For all cooling procedures, the diffracted intensity tends towards zero for μ₀H=B_NLt;B_c2 (B_N~1.5T at 2.5 K) for all cooling procedures. The corresponding B_N(T) line is discussed in comparison with the field induced order-disorder transition theory.

Original language	English
Pages (from-to)	165-170
Number of pages	6
Journal	Physica C: Superconductivity and its Applications
Volume	377
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4534(01)01196-0
Publication status	Published - 21 Aug 2002

Keywords

Neutron diffraction
Vortex matter

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10.1016/S0921-4534(01)01196-0

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title = "Small angle neutron scattering investigation of the magnetic history dependence of the vortex structure in the cubic (K,Ba)BiO3 superconductor",

abstract = "The influence of the magnetic history on the structure of the vortex solid has been investigated by small angle neutron scattering in the cubic (K,Ba)BiO3 superconductor. The diffracted intensity strongly depends on the cooling procedure for 0.3<μ0H<0.7T (at 2.5 K) showing that defects can be quenched into the vortex solid in this field range. For all cooling procedures, the diffracted intensity tends towards zero for μ0H=BNLt;Bc2 (BN\textasciitilde{}1.5T at 2.5 K) for all cooling procedures. The corresponding BN(T) line is discussed in comparison with the field induced order-disorder transition theory.",

keywords = "Neutron diffraction, Vortex matter",

author = "I. Joumard and T. Klein and S. Blanchard and J. Marcus and R. Cubitt",

year = "2002",

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doi = "10.1016/S0921-4534(01)01196-0",

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TY - JOUR

T1 - Small angle neutron scattering investigation of the magnetic history dependence of the vortex structure in the cubic (K,Ba)BiO3 superconductor

AU - Joumard, I.

AU - Klein, T.

AU - Blanchard, S.

AU - Marcus, J.

AU - Cubitt, R.

PY - 2002/8/21

Y1 - 2002/8/21

N2 - The influence of the magnetic history on the structure of the vortex solid has been investigated by small angle neutron scattering in the cubic (K,Ba)BiO3 superconductor. The diffracted intensity strongly depends on the cooling procedure for 0.3<μ0H<0.7T (at 2.5 K) showing that defects can be quenched into the vortex solid in this field range. For all cooling procedures, the diffracted intensity tends towards zero for μ0H=BNLt;Bc2 (BN~1.5T at 2.5 K) for all cooling procedures. The corresponding BN(T) line is discussed in comparison with the field induced order-disorder transition theory.

AB - The influence of the magnetic history on the structure of the vortex solid has been investigated by small angle neutron scattering in the cubic (K,Ba)BiO3 superconductor. The diffracted intensity strongly depends on the cooling procedure for 0.3<μ0H<0.7T (at 2.5 K) showing that defects can be quenched into the vortex solid in this field range. For all cooling procedures, the diffracted intensity tends towards zero for μ0H=BNLt;Bc2 (BN~1.5T at 2.5 K) for all cooling procedures. The corresponding BN(T) line is discussed in comparison with the field induced order-disorder transition theory.

KW - Neutron diffraction

KW - Vortex matter

UR - https://www.scopus.com/pages/publications/0036333988

U2 - 10.1016/S0921-4534(01)01196-0

DO - 10.1016/S0921-4534(01)01196-0

M3 - Article

AN - SCOPUS:0036333988

SN - 0921-4534

VL - 377

SP - 165

EP - 170

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-2

ER -

Small angle neutron scattering investigation of the magnetic history dependence of the vortex structure in the cubic (K,Ba)BiO₃ superconductor

Abstract

Keywords

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