Observation of direct transitions in the ferromagnetic and antiferromagnetic dimer system (CH 3) 2NH 2CuCl 3 by high-field ESR

Makoto Yoshida, Yumiko Kitano, Yuji Inagaki, Takahiro Sakurai, Motoi Kimata, Susumu Okubo, Hitoshi Ohta, Keiichi Koyama, Mitsuhiro Motokawa, Takayuki Asano, Yoshitami Ajiro

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

High-field electron spin resonance (ESR) measurements of single crystals of (CH 3) 2NH 2CuCl 3 (DMACuCl 3) have been performed in the frequency range of 50 to 550 GHz in the paramagnetic region. In addition to the electron paramagnetic resonance, we have observed four ESR modes ω 1, ω 2, ω 3, and ω 4. The modes ω 2 and ω 3 have a frequency gap of 325 GHz (15.6 K), while the mode ω 1 has a gap of 420 GHz (20 K) at 0 T. The modes ω 2 and ω 3 are attributed to the transitions between the singlet and the triplet of the antiferromagnetic (AF) dimer. We found that the large spin-gap for the AF dimer still remains at the critical field B c2 = 3.5 T determined by magnetization and specific heat measurements.

本文言語英語
論文番号113704
ジャーナルjournal of the physical society of japan
76
11
DOI
出版ステータス出版済み - 11 1 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

フィンガープリント 「Observation of direct transitions in the ferromagnetic and antiferromagnetic dimer system (CH <sub>3</sub>) <sub>2</sub>NH <sub>2</sub>CuCl <sub>3</sub> by high-field ESR」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。

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