Observation of higher-harmonic helical spin-resonance modes in the chromium spinel CdCr2O4

S. Kimura, M. Hagiwara, H. Ueda, Y. Narumi, K. Kindo, H. Yashiro, T. Kashiwagi, H. Takagi

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23 Citations (Scopus)

Abstract

High frequency ESR measurements on the chromium spinel compound CdCr2O4 have been performed. The observed ESR modes below Hcâ€â‰ 5.7T can be explained well by the calculated resonance modes based on a molecular field theory assuming a helical spin structure. Other than the fundamental ones, we have succeeded in observing the higher-harmonic modes for the first time. A large change of the ESR modes above Hc†indicate that a variation of the spin structure from the helical to the four-sublattice canted one takes place around Hcâ€.

Original languageEnglish
Article number257202
JournalPhysical review letters
Volume97
Issue number25
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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