Modes of Magnetic Resonance in the Spin-Liquid Phase of Cs(2)CuCl(4)

Povarov, K. Y.; Smirnov, A. I.; Starykh, O. A.; Petrov, S. V.; Shapiro, A. Y.

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Modes of Magnetic Resonance in the Spin-Liquid Phase of Cs(2)CuCl(4)

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Starykh, O. A.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Povarov, K. Y., Smirnov, A. I., Starykh, O. A., Petrov, S. V., & Shapiro, A. Y. (2011). Modes of Magnetic Resonance in the Spin-Liquid Phase of Cs(2)CuCl(4). Physical Review Letters, 107(3): 037204.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-8C79-7

Abstract

We report the observation of a frequency shift and splitting of the electron spin resonance (ESR) mode of the low-dimensional S = 1/2 frustrated antiferromagnet Cs(2)CuCl(4) in the spin-correlated state above the ordering temperature 0.62 K. The shift and splitting exhibit strong anisotropy with respect to the direction of the applied magnetic field and do not vanish in a zero field. The low-temperature evolution of the ESR is a result of the modification of the one-dimensional spinon continuum by the uniform Dzyaloshinskii-Moriya interaction within the spin chains.