Direct measurement of the magnetic field penetration depth in YBa2Cu3O7 superconducting films by polarized neutron reflectometry

V. Lauter-Pasyuk; H. J. Lauter; V. L. Aksenov; E. I. Kornilov; A. V. Petrenko; P. Leiderer

doi:10.1016/S0921-4526(97)00851-X

Direct measurement of the magnetic field penetration depth in YBa₂Cu₃O₇ superconducting films by polarized neutron reflectometry

V. Lauter-Pasyuk, H. J. Lauter, V. L. Aksenov, E. I. Kornilov, A. V. Petrenko, P. Leiderer

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

2 Scopus citations

Abstract

A study of the magnetic field penetration depth in a high-temperature (HT_c) superconducting film was performed with polarized neutron reflectometry in two scattering geometries. The fit to the reflectivity curves yielded the neutron-scattering length density profile and thus a precise image of the composition of the film. The film had a good quality seen by a not noticeable off-specular scattering. The fit to the spin asymmetry gave a magnetic-penetration depth of 1350 ± 150 Å along the oaxis at a temperature T = 2 K. The model included an intrinsic exponential decay of the penetration depth. For the first time the spin asymmetry was determined with high resolution over an extended Q-range for a HT_c-film.

Original language	English
Pages (from-to)	1095-1097
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	241-243
DOIs	https://doi.org/10.1016/S0921-4526(97)00851-X
State	Published - 1997
Externally published	Yes

Funding

The present work was supported by the BMBF under contract Le03Kon and Le04Kon/Dubna.

Funders	Funder number
Bundesministerium für Bildung und Forschung

Keywords

High-T
Magnetic penetration depth
Polarized neutron reflection
Superconducting film

Access to Document

10.1016/S0921-4526(97)00851-X

Cite this

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title = "Direct measurement of the magnetic field penetration depth in YBa2Cu3O7 superconducting films by polarized neutron reflectometry",

abstract = "A study of the magnetic field penetration depth in a high-temperature (HTc) superconducting film was performed with polarized neutron reflectometry in two scattering geometries. The fit to the reflectivity curves yielded the neutron-scattering length density profile and thus a precise image of the composition of the film. The film had a good quality seen by a not noticeable off-specular scattering. The fit to the spin asymmetry gave a magnetic-penetration depth of 1350 ± 150 {\AA} along the oaxis at a temperature T = 2 K. The model included an intrinsic exponential decay of the penetration depth. For the first time the spin asymmetry was determined with high resolution over an extended Q-range for a HTc-film.",

keywords = "High-T, Magnetic penetration depth, Polarized neutron reflection, Superconducting film",

author = "V. Lauter-Pasyuk and Lauter, {H. J.} and Aksenov, {V. L.} and Kornilov, {E. I.} and Petrenko, {A. V.} and P. Leiderer",

year = "1997",

doi = "10.1016/S0921-4526(97)00851-X",

language = "English",

volume = "241-243",

pages = "1095--1097",

journal = "Physica B: Physics of Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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T1 - Direct measurement of the magnetic field penetration depth in YBa2Cu3O7 superconducting films by polarized neutron reflectometry

AU - Lauter-Pasyuk, V.

AU - Lauter, H. J.

AU - Aksenov, V. L.

AU - Kornilov, E. I.

AU - Petrenko, A. V.

AU - Leiderer, P.

PY - 1997

Y1 - 1997

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AB - A study of the magnetic field penetration depth in a high-temperature (HTc) superconducting film was performed with polarized neutron reflectometry in two scattering geometries. The fit to the reflectivity curves yielded the neutron-scattering length density profile and thus a precise image of the composition of the film. The film had a good quality seen by a not noticeable off-specular scattering. The fit to the spin asymmetry gave a magnetic-penetration depth of 1350 ± 150 Å along the oaxis at a temperature T = 2 K. The model included an intrinsic exponential decay of the penetration depth. For the first time the spin asymmetry was determined with high resolution over an extended Q-range for a HTc-film.

KW - High-T

KW - Magnetic penetration depth

KW - Polarized neutron reflection

KW - Superconducting film

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