Abstract
The spin-lattice and spin-spin relaxation times have been measured for 63,65Cu NMR in the infinite-layer anti-ferromagnet SrCuO2 in the ordered state for temperatures from 4.2 to 361 K. In the region of low temperatures (T≤250 K), both relaxation processes are of the same nature and the main contribution to the relaxation rate is associated with the diffusion of a small number of holes with an activation energy of ∼42 meV. In the high-temperature range (T > 250 K), contributions to the transverse relaxation rate exhibit redistribution and this relaxation process is determined predominantly by indirect interactions.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 80, No. 8, 2004, pp. 614–618.
Original Russian Text Copyright © 2004 by Mikhalev, Rebrin, Gerashchenko, D'yachkova.
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Mikhalev, K.N., Rebrin, S.O., Gerashchenko, A.P. et al. 63,65Cu NMR study of low-frequency spin dynamics in the infinite-layer antiferromagnetic compound SrCuO2 . Jetp Lett. 80, 540–543 (2004). https://doi.org/10.1134/1.1846115
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DOI: https://doi.org/10.1134/1.1846115