μsR study on quantum spin system NH4CUCl3

K. Matsui, A. Oosawa, K. Yoshizawa, T. Goto, I. Watanabe, T. Suzuki, M. Fujisawa, H. Tanaka, P. K. Biswas, A. Amato

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

The quantum spin dimer system NH4CuCl3 has a gapless ground state with TN 1.3 K, and shows plateaus in the high-field magnetization at 1/4 and 3/4 of the saturation magnetization, the mechanism of which has not yet been resolved until now. The three dimer model recently proposed by Matsumoto, which seems well accounting for the emergence of plateaus, predicts the existence of three magnetically-inequivalent dimers. In order to test the model, we have measured transverse-field (TF) muon depolarization curves. In fourier transform of TF muon depolarization curves, we observed homogeneous single peak at T > 100 K. Below 70 K, the peak showed rapid broadening, and split into multiple peaks in still lower temperatures, supporting the idea of the three dimer subsystems.

本文言語English
論文番号012007
ジャーナルJournal of Physics: Conference Series
551
1
DOI
出版ステータスPublished - 2014
イベント13th International Conference on Muon Spin Rotation, Relaxation and Resonance, MuSR 2014 - Grindelwald, Switzerland
継続期間: 2014 6 12014 6 6

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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