t-J model and nuclear magnetic relaxation in high-Tc materials

Sriram Shastry, B. (1989) t-J model and nuclear magnetic relaxation in high-Tc materials Physical Review Letters, 63 (12). pp. 1288-1291. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v63/i12/p1288_1

Related URL: http://dx.doi.org/10.1103/PhysRevLett.63.1288

Abstract

We obtain the Fermi contact term of the electron-nuclear effective Hamiltonian describing the coupling between the planar Cu(2) nucleus and the O(2,3) nuclei on the one hand, and the effective degrees of freedom of the one band t-J (or Heisenberg Hubbard) model on the other. The details of the resulting couplings suggest that the copper and oxygen relaxation rates are sensitive to antiferromagnetic correlations in different degree. In the insulating phase we predict that the effective dynamical critical exponent for O(2,3) is reduced by two from that of Cu(2).

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:50842
Deposited On:27 Jul 2011 13:15
Last Modified:18 May 2016 05:00

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