Raman scattering of the charge-spin stripes in La1.67Sr0.33NiO4

K. Yamamoto, T. Katsufuji, T. Tanabe, Y. Tokura

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Abstract

Raman scattering spectra have been investigated for a single crystal of La1.67Sr0.33NiO4 which shows stripe ordering of charge (Tc = 230 K) and spin (Ts = 180 K. Upon the charge ordering, the activated phonon peaks grow with the evolution of the charge modulation amplitude, while the electronic Raman continuum of the metallic state abruptly disappears. The two broad peaks with the B1g symmetry arising from the two-magnon excitations emerge immediately below Tc, indicating the evolution of the two-dimensional antiferromagnetic spin correlation in the charge-ordered state even above Ts.

Original languageEnglish
Pages (from-to)1493-1496
Number of pages4
JournalPhysical Review Letters
Volume80
Issue number7
DOIs
Publication statusPublished - 1998 Feb 16

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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