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Melmed AJ, Shull RD, Chiang CK, et al. Possible Evidence for Superconducting Layers in Single Crystal YBa2Cu3O7-x by Field Ion Microscopy. Science. 1988;239(4836):176-8doi: 10.1126/science.239.4836.176.
Melmed, A. J., Shull, R. D., Chiang, C. K., & Fowler, H. A. (1988). Possible Evidence for Superconducting Layers in Single Crystal YBa2Cu3O7-x by Field Ion Microscopy. Science (New York, N.Y.), 239(4836), 176-8. https://doi.org/10.1126/science.239.4836.176
Melmed, A J, et al. "Possible Evidence for Superconducting Layers in Single Crystal YBa2Cu3O7-x by Field Ion Microscopy." Science (New York, N.Y.) vol. 239,4836 (1988): 176-8. doi: https://doi.org/10.1126/science.239.4836.176
Melmed AJ, Shull RD, Chiang CK, Fowler HA. Possible Evidence for Superconducting Layers in Single Crystal YBa2Cu3O7-x by Field Ion Microscopy. Science. 1988 Jan 08;239(4836):176-8. doi: 10.1126/science.239.4836.176. PMID: 17732978.
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Science. 1988 Jan 08;239(4836):176-8. doi: 10.1126/science.239.4836.176.

Possible Evidence for Superconducting Layers in Single Crystal YBa2Cu3O7-x by Field Ion Microscopy.

Science (New York, N.Y.)

A J Melmed, R D Shull, C K Chiang, H A Fowler

PMID: 17732978 DOI: 10.1126/science.239.4836.176

Abstract

The high-transition-temperature superconducting ceramic material YBa(2)Cu(3)O(7-x) (0< x < 0.5) has been examined by field ion microscopy. Specimens from nominally superconducting and nonsuperconducting samples(determined by magnetic susceptibility measurements) were studied by field ion microscopy and significant differences were found. Preferential imaging of atomic or molecular layers, due to preferential field evaporation, field ionization, or both, was found in the superconducting phase below the transition temperature and is interpreted as possible evidence for the occurrence of relatively highly conducting layers in the YBa(2)Cu(3)O(7-x) unit cell perpendicular to the orthorhombic c-axis. Similar results were obtained for YbBa(2)Cu(3)(7-x).

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