Specific heat study of novel spin-gapped system

(CH3) 2NH2CuCl3

Yasuo Yoshida, Osamu Wada, Yuji Inagaki, Takayuki Asano, Kenji Takeo, Tatsuya Kawae, Kazuyoshi Takeda, Yoshitami Ajiro

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Specific heat measurements in a magnetic field up to 8 T have been performed on an S = 1/2 weakly coupled alternating ferromagnetic (F) and antiferromagnetic (AF) dimer chain system, (CH3)2NH 2-CuCl3. We have observed a spontaneous AF ordering and a field-induced one below and above the 1/2 magnetization plateau field range from 2 to 3.5 T, respectively. The H-T phase boundaries for the orderings are completely different from the general reentrant ones of the other quantum spin systems investigated thus far. In the plateau field range, a double-peaked structure is observed in the temperature dependence of specific heat, reflecting the coexistence of F and AF excitations.

Original languageEnglish
Pages (from-to)2917-2920
Number of pages4
JournalJournal of the Physical Society of Japan
Volume74
Issue number11
DOIs
Publication statusPublished - Nov 1 2005

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plateaus
specific heat
heat measurement
dimers
magnetization
temperature dependence
magnetic fields
excitation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Specific heat study of novel spin-gapped system : (CH3) 2NH2CuCl3. / Yoshida, Yasuo; Wada, Osamu; Inagaki, Yuji; Asano, Takayuki; Takeo, Kenji; Kawae, Tatsuya; Takeda, Kazuyoshi; Ajiro, Yoshitami.

In: Journal of the Physical Society of Japan, Vol. 74, No. 11, 01.11.2005, p. 2917-2920.

Research output: Contribution to journalArticle

Yoshida, Yasuo ; Wada, Osamu ; Inagaki, Yuji ; Asano, Takayuki ; Takeo, Kenji ; Kawae, Tatsuya ; Takeda, Kazuyoshi ; Ajiro, Yoshitami. / Specific heat study of novel spin-gapped system : (CH3) 2NH2CuCl3. In: Journal of the Physical Society of Japan. 2005 ; Vol. 74, No. 11. pp. 2917-2920.
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