Effect of defects on the critical points in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}

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The upper and lower critical points are investigated in untwinned YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} single crystals with dilute columnar defects. Dilute columnar defects raise the upper critical point, indicating that the transition near the upper critical point is a vortex entanglement transition. The lower critical point is very sensitive to columnar defect disorder and its position can be described by a Lindemann-like criterion similar to that for melting. Dilute columnar defects induce non-linear behavior in the I-V curves of the vortex liquid state above the lower critical point, which the authors interpret as a vestige of the critical region associated ... continued below

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7 p.

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Kwok, W. K.; Olsson, R. J.; Karapetrov, G.; Paulis, L. M.; Moulton, W. G.; Hofman, D. J. et al. January 26, 2000.

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The upper and lower critical points are investigated in untwinned YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} single crystals with dilute columnar defects. Dilute columnar defects raise the upper critical point, indicating that the transition near the upper critical point is a vortex entanglement transition. The lower critical point is very sensitive to columnar defect disorder and its position can be described by a Lindemann-like criterion similar to that for melting. Dilute columnar defects induce non-linear behavior in the I-V curves of the vortex liquid state above the lower critical point, which the authors interpret as a vestige of the critical region associated with the Bose glass transition below the lower critical point.

Physical Description

7 p.

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INIS; OSTI as DE00751891

Medium: P; Size: 7 pages

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  • 6th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors, Houston, TX (US), 02/20/2000--02/25/2000

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  • Report No.: ANL/MSD/CP-100957
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 751891
  • Archival Resource Key: ark:/67531/metadc710271

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  • January 26, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 3:13 p.m.

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Kwok, W. K.; Olsson, R. J.; Karapetrov, G.; Paulis, L. M.; Moulton, W. G.; Hofman, D. J. et al. Effect of defects on the critical points in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}, article, January 26, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc710271/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.