Neutron Scattering from the Flux Line Lattice in the Cubic (K, Ba)BiO3 Superconductor

Thierry Klein; Isabelle Joumard; Jacques Marcus; Robert Cubitt

doi:10.1023/a:1022573128906

Neutron Scattering from the Flux Line Lattice in the Cubic (K, Ba)BiO₃ Superconductor

Thierry Klein, Isabelle Joumard, Jacques Marcus, Robert Cubitt

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

Abstract

Small Angle Neutron Scattering has been used to observe diffraction from the flux line lattice in the fully isotropic (K, Ba)BiO₃ high T_c superconductor. We show that the flux lines are ordered into a hexagonal lattice at low field (H < H_e ∼ 0.6T ≪ H_g(0) where H_g is the second order vortex glass transition field). The diffracted intensity continuously drops to zero as the field is increased towards H_e. Those observations are in good agreement with recent theoritical works which suggested that the formation of dislocations becomes favorable above He leading to a glassy structure. The field H_e lies close to the onset of the second peak in magnetization measurements indicating that this peak is related to the change in the vortex structure.

Original language	English
Pages (from-to)	1353-1357
Number of pages	5
Journal	Journal of Low Temperature Physics
Volume	117
Issue number	5-6
DOIs	https://doi.org/10.1023/a:1022573128906
Publication status	Published - 1 Jan 1999
Externally published	Yes

Access to Document

10.1023/a:1022573128906

Cite this

@article{f732b9f9ccb04ee8ab7934b3b0793605,

title = "Neutron Scattering from the Flux Line Lattice in the Cubic (K, Ba)BiO3 Superconductor",

abstract = "Small Angle Neutron Scattering has been used to observe diffraction from the flux line lattice in the fully isotropic (K, Ba)BiO3 high Tc superconductor. We show that the flux lines are ordered into a hexagonal lattice at low field (H < He ∼ 0.6T ≪ Hg(0) where Hg is the second order vortex glass transition field). The diffracted intensity continuously drops to zero as the field is increased towards He. Those observations are in good agreement with recent theoritical works which suggested that the formation of dislocations becomes favorable above He leading to a glassy structure. The field He lies close to the onset of the second peak in magnetization measurements indicating that this peak is related to the change in the vortex structure.",

author = "Thierry Klein and Isabelle Joumard and Jacques Marcus and Robert Cubitt",

year = "1999",

month = jan,

day = "1",

doi = "10.1023/a:1022573128906",

language = "English",

volume = "117",

pages = "1353--1357",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

number = "5-6",

}

TY - JOUR

T1 - Neutron Scattering from the Flux Line Lattice in the Cubic (K, Ba)BiO3 Superconductor

AU - Klein, Thierry

AU - Joumard, Isabelle

AU - Marcus, Jacques

AU - Cubitt, Robert

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Small Angle Neutron Scattering has been used to observe diffraction from the flux line lattice in the fully isotropic (K, Ba)BiO3 high Tc superconductor. We show that the flux lines are ordered into a hexagonal lattice at low field (H < He ∼ 0.6T ≪ Hg(0) where Hg is the second order vortex glass transition field). The diffracted intensity continuously drops to zero as the field is increased towards He. Those observations are in good agreement with recent theoritical works which suggested that the formation of dislocations becomes favorable above He leading to a glassy structure. The field He lies close to the onset of the second peak in magnetization measurements indicating that this peak is related to the change in the vortex structure.

AB - Small Angle Neutron Scattering has been used to observe diffraction from the flux line lattice in the fully isotropic (K, Ba)BiO3 high Tc superconductor. We show that the flux lines are ordered into a hexagonal lattice at low field (H < He ∼ 0.6T ≪ Hg(0) where Hg is the second order vortex glass transition field). The diffracted intensity continuously drops to zero as the field is increased towards He. Those observations are in good agreement with recent theoritical works which suggested that the formation of dislocations becomes favorable above He leading to a glassy structure. The field He lies close to the onset of the second peak in magnetization measurements indicating that this peak is related to the change in the vortex structure.

U2 - 10.1023/a:1022573128906

DO - 10.1023/a:1022573128906

M3 - Article

AN - SCOPUS:0033332461

SN - 0022-2291

VL - 117

SP - 1353

EP - 1357

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 5-6

ER -

Neutron Scattering from the Flux Line Lattice in the Cubic (K, Ba)BiO3 Superconductor

Abstract

Access to Document

Fingerprint

Cite this

Neutron Scattering from the Flux Line Lattice in the Cubic (K, Ba)BiO₃ Superconductor