C63uNQR Evidence of Dimensional Crossover to Anisotropic 2D Regime inS=12Three-Leg LadderSr2Cu3O5 Academic Article uri icon

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abstract

  • We probed spin-spin correlations up to 725 K with 63Cu nuclear quadrupole resonance in the S = 1 / 2 three-leg ladder Sr2Cu3O5. We present experimental evidence that below 300 K weak interladder coupling causes dimensional crossover of the spin-spin correlation length xi from the quasi-1D (xi approximately 1 / T) to the anisotropic 2D regime ( xi approximately exp2pirho(s) / T, where 2pirho(s) = 290+/-30 K is the effective spin stiffness).

authors

  • Thurber, KR
  • Imai, Takashi
  • Saitoh, T
  • Azuma, M
  • Takano, M
  • Chou, FC

publication date

  • January 17, 2000