1H-NMR spin-lattice relaxation rate of the quantum spin system (CH 3) 2CHNH 3Cu(Cl xBr 1-x) 3 with x = 0 and 0.35

Akira Oosawa, Takao Suzuki, Keishi Kanada, Satoshi Kojima, Takayuki Goto, Hirotaka Manaka

研究成果: Article査読

5 被引用数 (Scopus)


The spin-lattice relaxation rate T 1 -1 of 1H-NMR has been measured in (CH 3 ) 2CHNH 3Cu(Cl xBr l-x) 3 with x - 0 and 0.35, in order to investigate their microscopic magnetism. Previous macroscopic magnetization and specific heat measurements suggested that these two exist in a singlet-dimer phase. The temperature dependence of T 1 -1 in an x - 0 system decreased exponentially toward zero, providing microscopic evidence of a gapped singlet ground state, which is consistent with results of macroscopic experiments. At the same time, in the x = 0.35 system, T 1 -1 showed a sharp peak structure at approximately 7.5 K but no splitting of 1H-NMR spectra, indicative of magnetic ordering. We discuss the observed sharp peak structure in the x - 0.35 system with the soft mode toward the exotic magnetic ground state suggested by recent μSR experiments.

ジャーナルjournal of the physical society of japan
出版ステータスPublished - 2009 5

ASJC Scopus subject areas

  • 物理学および天文学(全般)


「<sup>1</sup>H-NMR spin-lattice relaxation rate of the quantum spin system (CH <sub>3</sub>) <sub>2</sub>CHNH <sub>3</sub>Cu(Cl <sub>x</sub>Br <sub>1-x</sub>) <sub>3</sub> with x = 0 and 0.35」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。