Muon Spin Relaxation and Susceptibility Studies of the Pure and Diluted Spin12Kagomé-Like Lattice System(CuxZn1−x)3V2O7(OH2)2H2O Academic Article uri icon

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abstract

  • Muon spin relaxation and magnetic susceptibility measurements have been performed on the pure and diluted spin 1/2 kagomé system (CuxZn(1-x))3V2O7(OH)2 2H2O. In the pure x=1 system we found a slowing down of Cu spin fluctuations with decreasing temperature towards T approximately 1 K, followed by slow and nearly temperature-independent spin fluctuations persisting down to T=50 mK, indicative of quantum fluctuations. No indication of static spin freezing was detected in either of the pure (x=1.0) or diluted samples. The observed magnitude of fluctuating fields indicates that the slow spin fluctuations represent an intrinsic property of kagomé network rather than impurity spins.

authors

  • Fukaya, A
  • Fudamoto, Y
  • Gat, IM
  • Ito, T
  • Larkin, MI
  • Savici, AT
  • Uemura, YJ
  • Kyriakou, PP
  • Luke, Graeme
  • Rovers, MT
  • Kojima, KM
  • Keren, A
  • Hanawa, M
  • Hiroi, Z

publication date

  • November 14, 2003