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Magnetic Transitions in High-Tc Superconductors

Published online by Cambridge University Press:  28 February 2011

R. A. Barrio ,
C. Wang ,
J. Tagüeña-Martinez ,
D. Rios-Jara ,
T. Akachi  and
R. Escudero
R. A. Barrio
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70–360, México 04510, Distrito Federal, México.
C. Wang
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70–360, México 04510, Distrito Federal, México.
J. Tagüeña-Martinez
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70–360, México 04510, Distrito Federal, México.
D. Rios-Jara
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70–360, México 04510, Distrito Federal, México.
T. Akachi
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70–360, México 04510, Distrito Federal, México.
R. Escudero
Affiliation:
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo. Postal 70–360, México 04510, Distrito Federal, México.
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Abstract

Based on very recent experimental evidence about magnetic transitions in high-Tc superconductors the role of superconductivity and magnetism is analyzed. A model of interacting electrons in a one-dimensional system is constructed, taking into account that antiferromagnetic interactions in the underlying lattice are present. The origin of this antiferromagnetism could be due to local Y d-electrons or rare earth f-electrons, related to the structure. Self-consistent calculations in this model show the possibility of a new state, with a gap, in which there are electron pairs. The characteristics of this new state are discussed in relation to superconductivity. The results of this model suggest that an extension of it could be applied to the new superconducting ceramics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 801
Copyright
Copyright © Materials Research Society 1988

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References

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