Magnetic imaging of interlayer Josephson vortices.

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The authors have magnetically imaged interlayer Josephson vortices emerging parallel to the planes of single crystals of the organic superconductor {kappa}-(BEDT-TTF){sub 2} Cu(NCS){sub 2}, and the single layer cuprate high-T{sub c} superconductors Tl{sub 2}Ba{sub 2}CuO{sub 6+{delta}} (Tl-2201) and (Hg,Cu)Ba{sub 2}CuO{sub 6+{delta}} (Hg-1201), using a scanning Superconducting Quantum Interference Device (SQUID) microscope. These images provide a direct measurement of the interlayer penetration depth, which is approximately 63 {micro}m for {kappa}-(BEDT-TTF){sub 2} Cu(NCS){sub 2}, 18 {micro}m for Tl-2201 and 8 {micro}m for Hg-1201. The lengths for the cuprates are about a factor of 10 larger than originally predicted by the interlayer tunneling ... continued below

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8 p.

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Kirtley, J. A. January 15, 1999.

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The authors have magnetically imaged interlayer Josephson vortices emerging parallel to the planes of single crystals of the organic superconductor {kappa}-(BEDT-TTF){sub 2} Cu(NCS){sub 2}, and the single layer cuprate high-T{sub c} superconductors Tl{sub 2}Ba{sub 2}CuO{sub 6+{delta}} (Tl-2201) and (Hg,Cu)Ba{sub 2}CuO{sub 6+{delta}} (Hg-1201), using a scanning Superconducting Quantum Interference Device (SQUID) microscope. These images provide a direct measurement of the interlayer penetration depth, which is approximately 63 {micro}m for {kappa}-(BEDT-TTF){sub 2} Cu(NCS){sub 2}, 18 {micro}m for Tl-2201 and 8 {micro}m for Hg-1201. The lengths for the cuprates are about a factor of 10 larger than originally predicted by the interlayer tunneling model for the mechanism of superconductivity in layered compounds, indicating that this mechanism alone cannot account for the high critical temperatures in these materials.

Physical Description

8 p.

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OSTI as DE00010913

Medium: P; Size: 8 pages

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  • International Symposium on Superconductivity, Fukuoka (JP), 11/16/1998--11/19/1998

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  • Report No.: ANL/CHM/CP-96989
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10913
  • Archival Resource Key: ark:/67531/metadc627956

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  • January 15, 1999

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  • June 16, 2015, 7:43 a.m.

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  • April 11, 2017, 6 p.m.

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Kirtley, J. A. Magnetic imaging of interlayer Josephson vortices., article, January 15, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc627956/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.