skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Low-field phenomenology and characteristic lengths of hydrogen- and halogen-doped YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compounds

Abstract

The authors measure the diamagnetic response of YBa{sub 2}Cu{sub 3}O{sub y}A{sub x} (A = Cl, F, H) ceramics. They obtain low-field effective penetration depths {lambda} of a few 10 {micro}m, first flux-penetration field H{sub 1} distinguishable from the volume penetration field H{sub C1} and two characteristic temperatures T{sub s} and {Tc}, {Tc} < T{sub s}, defined by the onset of the real and imaginary parts of the susceptibility, respectively. H{sub 1}(T) goes to zero as a power law H{sub 1}(T, x) = H{sub 1}(0, x) (T {minus} T/{Tc}){sup 2.7} near {Tc}. From the values of {lambda} and H{sub 1} they infer the correlation length {xi} at T = 4.2 K. A large range of values for {xi}(4.2) suggests that chemical disorder plays an essential role in the phenomenology of cuprates. They find {lambda}(4.2) {approximately} H{sub 1}(4.2){sup {minus}1/3}. This, and the power law {xi}(4.2) {approximately} H{sub 1}(4.2){sup {minus}2/3} result from the scaling properties of a phase transition governed by disorder.

Authors:
; ;  [1]
  1. INSA, Rennes (France). Lab. de Physique des Solides [and others
Publication Date:
OSTI Identifier:
687499
Resource Type:
Journal Article
Journal Name:
Journal of Low Temperature Physics
Additional Journal Information:
Journal Volume: 116; Journal Issue: 5-6; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; DOPED MATERIALS; PENETRATION DEPTH; TRANSITION TEMPERATURE; MAGNETIC SUSCEPTIBILITY; ORDER-DISORDER TRANSFORMATIONS; HIGH-TC SUPERCONDUCTORS; EXPERIMENTAL DATA; CHLORIDES; HYDRIDES; FLUORIDES

Citation Formats

Dehmej, J., Fouad, Y., and Burin, J.P. Low-field phenomenology and characteristic lengths of hydrogen- and halogen-doped YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compounds. United States: N. p., 1999. Web. doi:10.1023/A:1021763626966.
Dehmej, J., Fouad, Y., & Burin, J.P. Low-field phenomenology and characteristic lengths of hydrogen- and halogen-doped YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compounds. United States. doi:10.1023/A:1021763626966.
Dehmej, J., Fouad, Y., and Burin, J.P. Wed . "Low-field phenomenology and characteristic lengths of hydrogen- and halogen-doped YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compounds". United States. doi:10.1023/A:1021763626966.
@article{osti_687499,
title = {Low-field phenomenology and characteristic lengths of hydrogen- and halogen-doped YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compounds},
author = {Dehmej, J. and Fouad, Y. and Burin, J.P.},
abstractNote = {The authors measure the diamagnetic response of YBa{sub 2}Cu{sub 3}O{sub y}A{sub x} (A = Cl, F, H) ceramics. They obtain low-field effective penetration depths {lambda} of a few 10 {micro}m, first flux-penetration field H{sub 1} distinguishable from the volume penetration field H{sub C1} and two characteristic temperatures T{sub s} and {Tc}, {Tc} < T{sub s}, defined by the onset of the real and imaginary parts of the susceptibility, respectively. H{sub 1}(T) goes to zero as a power law H{sub 1}(T, x) = H{sub 1}(0, x) (T {minus} T/{Tc}){sup 2.7} near {Tc}. From the values of {lambda} and H{sub 1} they infer the correlation length {xi} at T = 4.2 K. A large range of values for {xi}(4.2) suggests that chemical disorder plays an essential role in the phenomenology of cuprates. They find {lambda}(4.2) {approximately} H{sub 1}(4.2){sup {minus}1/3}. This, and the power law {xi}(4.2) {approximately} H{sub 1}(4.2){sup {minus}2/3} result from the scaling properties of a phase transition governed by disorder.},
doi = {10.1023/A:1021763626966},
journal = {Journal of Low Temperature Physics},
number = 5-6,
volume = 116,
place = {United States},
year = {1999},
month = {9}
}