Multiferroicity in the spin-1/2 quantum matter of LiCu2O 2

A. Rusydi, I. Mahns, S. Müller, M. Rübhausen, S. Park, Y. J. Choi, C. L. Zhang, S. W. Cheong, S. Smadici, P. Abbamonte, M. V. Zimmermann, G. A. Sawatzky

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Abstract

Multiferroicity in Li Cu2 O2 single crystals is studied using resonant soft x-ray magnetic scattering, hard x-ray diffraction, heat capacity, magnetic susceptibility, and electrical polarization. Two magnetic transitions are found at 24.6 K (T1) and 23.2 K (T2). Our data are consistent with a sinusoidal spin structure at T2 <T< T1 and with a helicoidal spin structure at T< T2, giving rise to ferroelectricity. Surprisingly, above T2, the correlation lengths of the spin structures increase as the temperature increases with dramatic changes of ∼42% occurring along the c axis.

Original languageEnglish
Article number262506
JournalApplied Physics Letters
Volume92
Issue number26
DOIs
Publication statusPublished - 2008 Jul 15

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Rusydi, A., Mahns, I., Müller, S., Rübhausen, M., Park, S., Choi, Y. J., Zhang, C. L., Cheong, S. W., Smadici, S., Abbamonte, P., Zimmermann, M. V., & Sawatzky, G. A. (2008). Multiferroicity in the spin-1/2 quantum matter of LiCu2O 2. Applied Physics Letters, 92(26), [262506]. https://doi.org/10.1063/1.2787973