Low-energy magnetic excitations in the mixed spin-(12, 52) chain

H. Yamaguchi, Y. Iwasaki, Y. Kono, T. Okita, A. Matsuo, M. Akaki, M. Hagiwara, Y. Hosokoshi

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6 Citations (Scopus)

Abstract

We present studies on the low-energy magnetic excitations in the Lieb-Mattis (LM) ferrimagnetic phase. We investigate the low-energy magnetic excitations in the mixed spin-(12,52) chain (4-Br-o-MePy-V)FeCl4 based on low-temperature specific heat and multifrequency electron spin resonance (ESR) measurements. A clear T term is observed in the specific heat, which indicates a contribution of the low-energy magnetic excitation with a ferromagnetic quadratic dispersion expected in the LM ferrimagnetic state. Through the ESR mode analysis, we examine the effects of magnetic anisotropy on the excited states in the LM plateau phase.

Original languageEnglish
Article number060408
JournalPhysical Review B
Volume102
Issue number6
DOIs
Publication statusPublished - 2020 Aug 1

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