The interplay between antiferromagnetism and superconductivity in disordered ultrathin high-Tc films

K.M. Beauchamp, T. Wang, G.C. Spalding and A.M. Goldman

Physica A: Statistical Mechanics and its Applications, 1993, vol. 200, issue 1, 287-295

Abstract: A series of ultrathin films of DyBa2Cu3O7−x, with properties spanning the zero-field superconductor-to-insulator transition, were prepared for the purpose of investigating the magnetic field driven superconductor-insulator transition. The resistance of these films was found to exhibit a peak whose magnitude became larger with the weakening of the superconductivity of the films. For a film just on the superconducting side of the zero-field superconductor-to-insulator transition, three successive changes in the sign of the low temperature dR/dT with increasing field were found. These have been taken as evidence of the superconducting state being successively excited, reentered, and finally exited with increasing field as the sign changes from positive to negative, to positive, and finally to negative. This unusual behavior may result from an interaction of the carriers with Cu2+ ions on the copper-oxygen sheets. These spins exhibit an increasing tendency to antiferromagnetic ordering as the superconductivity of the films is weakened. The presence of many grain boundaries in the films may be the reason the effect is strikingly large.

Date: 1993
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/037843719390527B
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:200:y:1993:i:1:p:287-295

DOI: 10.1016/0378-4371(93)90527-B

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().