Novel Frustrated Spin Chain System in KCu5V3O13

Hiroya Sakurai, Kazuyoshi Yoshimura, Koji Kosuge, Akihiro Mitsuda, Tsuneaki Goto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A powder sample of KCu5V3O13 was synthesized and is expected to represent a novel frustrated spin chain system based on its characteristic crystal structure. The magnetic susceptibility and the high-field magnetization process were investigated in order to elucidate the ground state of this spin chain system. From the results, the ground state of this compound appears to be an antiferromagnetically ordered state. The transition temperature was determined to be TN = 7.8 K. However, there are some anomalous behaviors evident in both the susceptibility and the magnetization curves: the Curie constant and the Weiss temperature change markedly around 75 K, the gradient of the magnetization curve becomes small after a spin-flop transition, and the number of the ordered spins is only 1/5 of all the copper spins. Assuming that the other spins vanish by forming a spin-singlet state, the energy gap was estimated to be 44.3 K from the magnetization curve. Thus, the classical renormalized ordered state may coexist with the quantum disordered state. Two conceivable models have been proposed for the ground state.

Original languageEnglish
Pages (from-to)3209-3212
Number of pages4
Journaljournal of the physical society of japan
Volume70
Issue number11
DOIs
Publication statusPublished - Nov 1 2001
Externally publishedYes

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magnetization
ground state
curves
magnetic permeability
transition temperature
copper
gradients
crystal structure
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Novel Frustrated Spin Chain System in KCu5V3O13 . / Sakurai, Hiroya; Yoshimura, Kazuyoshi; Kosuge, Koji; Mitsuda, Akihiro; Goto, Tsuneaki.

In: journal of the physical society of japan, Vol. 70, No. 11, 01.11.2001, p. 3209-3212.

Research output: Contribution to journalArticle

Sakurai, Hiroya ; Yoshimura, Kazuyoshi ; Kosuge, Koji ; Mitsuda, Akihiro ; Goto, Tsuneaki. / Novel Frustrated Spin Chain System in KCu5V3O13 In: journal of the physical society of japan. 2001 ; Vol. 70, No. 11. pp. 3209-3212.
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