NMR study on the competing spin chain Rb2Cu2Mo3O12

A. Yagi, K. Matsui, T. Goto, M. Hase, T. Sasaki

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8 Citations (Scopus)


Quasi-one-dimensional S = 1/2 Heisenberg system Rb2Cu2Mo3O12 described by the J1 - J2 model with the nearest-neighbor ferromagnetic and next-nearest-neighbor antiferromagnetic exchange interactions have been investigated by 87/85Rb-NMR under extended field range up to 18 T. From the thermal-activation-type temperature dependence of l/T1, opening of the spin excitation gap was confirmed under the low field below 2 T. With increasing the field, the system becomes gapless, and the gap opens again in the high field saturation region, where the field dependence of the gap size showed the coherent excitation of the neighbouring two spins.

Original languageEnglish
Article number012016
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2017 Apr 20
Event8th International Conference on Highly Frustrated Magnetism 2016, HFM 2016 - Taipei, Taiwan, Province of China
Duration: 2016 Sept 72016 Sept 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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