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

Research output: Contribution to journalArticlepeer-review


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 (US)
Article number262506
JournalApplied Physics Letters
Issue number26
StatePublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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