Quasi One-Dimensional Spin Fluctuations in YBa(2)Cu(3)O(6+x)

Details Quasi One-Dimensional Spin Fluctuations in YBa(2)Cu(3)O(6+x) Quasi One-Dimensional Spin Fluctuations in YBa(2)Cu(3)O(6+x)

1997-01-30

arxiv.org/abs/cond-mat/9701216v1

Physics

Condensed Matter

Strongly Correlated Electrons

22 pages, REVTEX, 3 figures, to appear in PRB55 (1May 1997)

Scientific paper

10.1103/PhysRevB.55.11358

We study the spin fluctuation of the oxygen deficient planes of YBa(2)Cu(3)O(6+x). The Cu-O chains that constitute these planes are described by a model that includes antiferromagnetic interactions between spins and Kondo-like scattering of oxygen holes. The spectrum of magnetic excitations shows the presence of incommensurate dynamic fluctuations along the direction of the chains. The presence of itinerant holes is responsible for the existence of important differences between the spin dynamics of this system and that of a quasi-one-dimensional localized antiferromagnet. We comment on the possibility of experimental observation of these fluctuations.

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