Phys. Rev. B 69, 134512 (2004) [7 pages]Schottky anomaly in Nd2CuO4 observed by muon spin relaxation
D. Baabe1 *, M. Hillberg1 †, F. J. Litterst1, P. Adelmann2, and H.-H. Klauss1 Received 30 June 2003; revised 5 November 2003; published 20 April 2004 We report zero-field muon spin relaxation experiments on Nd2CuO4 focused on the low-temperature range for studying the Nd Schottky anomaly. In the magnetically ordered state we observed a significant increase and saturation of the muon spin precession frequency below T=15 K. A fit based on the temperature-dependent population of the Nd3+ Kramers ground-state doublet reveals a splitting of the doublet of Δ=4.2(6) K in good agreement with the work of Adelmann et al. [Phys. Rev. B 46, 3619 (1992)]. The same model was applied to account for the temperature dependence of the dynamic relaxation rate resulting in Δ=4.6(5) K. A quantitative evaluation of the temperature-dependent local magnetic field fluctuation rate is presented. ©2004 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevB.69.134512
* Electronic address: d.baabe@tu-bs.de
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