Site-selective quantum correlations revealed by magnetic anisotropy in the tetramer system SeCuO3

Živković, Ivica and Djokić, Dejan M. and Herak, Mirta and Pajić, Damir and Prša, Krunoslav and Pattison, P. and Dominko, Damir and Micković, Zlatko and Cinčić, Dominik and Forro, Laszlo and Berger, Helmut and Ronnow, Henrik M. (2012) Site-selective quantum correlations revealed by magnetic anisotropy in the tetramer system SeCuO3. Physical Review B, 86 (5). pp. 54405-1. ISSN 1098-0121

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We present the investigation of a monoclinic compound SeCuO3 using x-ray powder diffraction, magnetization, torque, and electron-spin-resonance. Structurally based analysis suggests that SeCuO3 can be considered as a three-dimensional network of tetramers. The values of intratetramer exchange interactions are extracted from the temperature dependence of the susceptibility and amount to ∼200 K. The intertetramer coupling leads to the development of long-range antiferromagnetic order at TN=8 K. An unusual temperature dependence of the effective g tensors is observed, accompanied with a rotation of macroscopic magnetic axes. We explain this unique observation as due to site-selective quantum correlations.

Item Type: Article
Keywords: magnetism, low-dimensional antiferromagnet
Date: August 2012
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2012) by the American Physical Society.
Divisions: Faculty of Science > Department of Chemistry
Faculty of Science > Department of Physics
Project code: 035-0352827-2842, 119-1191458-1017, 035-0352843-2846, 035-0352843-2845
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 15 May 2014 12:49
Last Modified: 23 Feb 2016 15:57

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