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

Dehmej, J; Fouad, Y; Burin, J P

doi:10.1023/A:1021763626966

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

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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:

Dehmej, J; Fouad, Y; Burin, J P ^[1]

INSA, Rennes (France). Lab. de Physique des Solides; and others

Publication Date:: Wed Sep 01 00:00:00 EDT 1999

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.

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                    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.  https://doi.org/10.1023/A:1021763626966

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                    Dehmej, J, Fouad, Y, and Burin, J P. 1999.  
        "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.  https://doi.org/10.1023/A:1021763626966.

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@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},

  url          = {https://www.osti.gov/biblio/687499},
  journal      = {Journal of Low Temperature Physics},
number       = 5-6,

  volume       = 116,

  place        = {United States},

  year         = {Wed Sep 01 00:00:00 EDT 1999},

  month        = {Wed Sep 01 00:00:00 EDT 1999}

}

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