Electron spin resonance study of spin relaxation in the strong-leg spin ladder 
with nonmagnetic dilution

Krasnikova , Yu. V.; Glazkov, V. N.; Ponomaryov, A.; Zvyagin, S. A.; Povarov, K. Yu; Galeski, S.; Zheludev, A.

doi:10.1103/PhysRevB.100.144446

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Electron spin resonance study of spin relaxation in the strong-leg spin ladder with nonmagnetic dilution

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Galeski, S.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Krasnikova, Y. V., Glazkov, V. N., Ponomaryov, A., Zvyagin, S. A., Povarov, K. Y., Galeski, S., et al. (2019). Electron spin resonance study of spin relaxation in the strong-leg spin ladder with nonmagnetic dilution. Physical Review B, 100(14): 144446, pp. 1-7. doi:10.1103/PhysRevB.100.144446.

Cite as: https://hdl.handle.net/21.11116/0000-0005-619B-F

Abstract

We have studied electron spin resonance (ESR) absorption spectra for the nonmagnetically diluted strong-leg spin ladder magnet (C7H10N)(2)Cu(1-x)ZnxBr4 (abbreviated as DIMPY) down to 450 mK. Formation of the clusters with nonzero net magnetization is confirmed; the cluster-cluster interaction is evidenced by the concentration dependence of ESR absorption. High-temperature spin-relaxation time was found to increase with nonmagnetic dilution. The ESR linewidth analysis proves that the Dzyaloshinskii-Moriya (DM) interaction remains the dominant spin-relaxation channel in diluted DIMPY. Experimental data indicate that the dilution results in the weakening of the effective DM interaction, which can be interpreted as total suppression of DM interaction in the close vicinity of impurity atom.