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Pis'ma v Zh. Èksper. Teoret. Fiz., 2004, Volume 80, Issue 8, Pages 614–618 (Mi jetpl2149)  

CONDENSED MATTER

63,65Cu NMR study of low-frequency spin dynamics in the infinite-layer antiferromagnetic compound SrCuO2

K. N. Mikhaleva, S. O. Rebrina, A. P. Gerashchenkoa, T. V. D'yachkovab

a Institute of Metal Physics, Ural Division of the Russian Academy of Sciences
b Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences

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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English version:
Journal of Experimental and Theoretical Physics Letters, 2004, 80:8, 540–543

Bibliographic databases:

PACS: 75.50., 76.60.-k
Received: 25.08.2004

Citation: K. N. Mikhalev, S. O. Rebrin, A. P. Gerashchenko, T. V. D'yachkova, “63,65Cu NMR study of low-frequency spin dynamics in the infinite-layer antiferromagnetic compound SrCuO2”, Pis'ma v Zh. Èksper. Teoret. Fiz., 80:8 (2004), 614–618; JETP Letters, 80:8 (2004), 540–543

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