Cu-NMR study on field-induced phase transitions in quantum spin magnet NH4CuCl3

Shin Ichiro Tani, Hiroaki Inoue, Takao Suzuki, Shigeharu Hosoya, Kaori Inokuchi, Takao Fujiwara, Takayuki Goto, Hidekazu Tanaka, Takahiko Sasaki, Satoshi Awaji, Kazuo Watanabe, Norio Kobayashi

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Abstract

Cu-NMR study under high-field up to 17 T has been performed on the three-dimensional spin dimer system NH4CuCl3, which shows the two-stepped magnetization plateaus. The local magnetization of Cu-site measured by NMR showed a significant deviation from the macroscopic magnetization at low temperatures, suggesting the localization of the field-induced triplons. In the high field region around 16 T, two inequivalent Cu sites are observed. Only one of the two sites shows a split in the resonance line below TN ≃ 3.2 K, indicating the existence of the field-induced magnetic order, to which a part of spins in the system participate.

Original languageEnglish
Pages (from-to)235-240
Number of pages6
JournalProgress of Theoretical Physics Supplement
Volume159
DOIs
Publication statusPublished - 2005 Dec 1

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Tani, S. I., Inoue, H., Suzuki, T., Hosoya, S., Inokuchi, K., Fujiwara, T., Goto, T., Tanaka, H., Sasaki, T., Awaji, S., Watanabe, K., & Kobayashi, N. (2005). Cu-NMR study on field-induced phase transitions in quantum spin magnet NH4CuCl3. Progress of Theoretical Physics Supplement, 159, 235-240. https://doi.org/10.1143/PTPS.159.235