Spin dynamics and antiferromagnetic order in PrBa2Cu4O8 studied by Cu nuclear respnance

S. Fujiyama; M. Takigawa; T. Suzuki; N. Yamada; S. Horii; Y. Yamada

doi:10.1103/PhysRevB.67.060404

Spin dynamics and antiferromagnetic order in PrBa2Cu4O8 studied by Cu nuclear respnance

Strongly Correlated Electrons 2009-11-07 v1

Authors: S. Fujiyama , M. Takigawa , T. Suzuki , N. Yamada , S. Horii , Y. Yamada

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Abstract

Results of the nuclear resonance experiments for the planar Cu sites in PrBa2Cu4O8 are presented. The NMR spectrum at 1.5 K in zero magnetic field revealed an internal field of 6.1 T, providing evidence for an antiferromagnetic order of the planar Cu spins. This confirms that the CuO2 planes are insulating, therefore, the metallic conduction in this material is entirely due to the one-dimensional zigzag Cu2O2 chains. The results of the spin-lattice relaxation rates measured by zero field NQR above 245 K in the paramagnetic state are explained by the theory for a Heisenberg model on a square lattice.

Keywords

spin dynamics antiferromagnetic order nuclear magnetic resonance PrBa2Cu4O8 nuclear quadrupole resonance Heisenberg model

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@article{arxiv.cond-mat/0210337,
  title  = {Spin dynamics and antiferromagnetic order in PrBa2Cu4O8 studied by Cu nuclear respnance},
  author = {S. Fujiyama and M. Takigawa and T. Suzuki and N. Yamada and S. Horii and Y. Yamada},
  journal= {arXiv preprint arXiv:cond-mat/0210337},
  year   = {2009}
}

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4 pages, 2 figures

Spin dynamics and antiferromagnetic order in PrBa2Cu4O8 studied by Cu nuclear respnance

Abstract

Keywords

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