Commensurate to incommensurate transition in the chiral helimagnet CuB 2O4

Toshiyuki Fujita; Yoshikuni Fujimoto; Seitaro Mitsudo; Toshitaka Idehara; Teruo Saito; Yusuke Kousaka; Shin Ichiro Yano; Jun Akimitsu; Jun Ichiro Kishine; Katsuya Inoue; Mitsuhiro Motokawa

doi:10.1143/JPSJ.77.053702

Commensurate to incommensurate transition in the chiral helimagnet CuB ₂O₄

Toshiyuki Fujita, Yoshikuni Fujimoto, Seitaro Mitsudo, Toshitaka Idehara, Teruo Saito, Yusuke Kousaka, Shin Ichiro Yano, Jun Akimitsu, Jun Ichiro Kishine, Katsuya Inoue, Mitsuhiro Motokawa

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We have studied a commensurate to incommensurate transition in the novel helimagnet CuB₂O₄ by means of high-frequency ESR. In the commensurate weak ferromagnetic (CWF) state, two ESR modes have been found at low temperatures, which are explained in terms of an electron paramagnetic resonance of the Cu²⁺ spins at 8d-sites and an antiferromagnetic resonance of the magnetically ordered Cu²⁺ spins at 4b-sites with the Dzyaloshinskii-Moriya (DM) interaction. The DM interaction among the Cu ²⁺ spins at 4b-sites that carries the CWF state is evaluated quantitatively. The incommensurate helimagnetic state is discussed in terms of the magnetic frustration.

Original language	English
Article number	053702
Journal	journal of the physical society of japan
Volume	77
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.77.053702
Publication status	Published - May 2008
Externally published	Yes

Keywords

Chiral soliton
Commensurate to incommensurate transition
Dzyaloshinskii-Moriya interaction
Frustration
Helimagnetism
High frequency ESR
Hysteresis
Weak ferromagnetism

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.77.053702

Cite this

Commensurate to incommensurate transition in the chiral helimagnet CuB ₂O₄. / Fujita, Toshiyuki; Fujimoto, Yoshikuni; Mitsudo, Seitaro; Idehara, Toshitaka; Saito, Teruo; Kousaka, Yusuke; Yano, Shin Ichiro; Akimitsu, Jun; Kishine, Jun Ichiro; Inoue, Katsuya; Motokawa, Mitsuhiro.

In: journal of the physical society of japan, Vol. 77, No. 5, 053702, 05.2008.

Research output: Contribution to journal › Article › peer-review

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abstract = "We have studied a commensurate to incommensurate transition in the novel helimagnet CuB2O4 by means of high-frequency ESR. In the commensurate weak ferromagnetic (CWF) state, two ESR modes have been found at low temperatures, which are explained in terms of an electron paramagnetic resonance of the Cu2+ spins at 8d-sites and an antiferromagnetic resonance of the magnetically ordered Cu2+ spins at 4b-sites with the Dzyaloshinskii-Moriya (DM) interaction. The DM interaction among the Cu 2+ spins at 4b-sites that carries the CWF state is evaluated quantitatively. The incommensurate helimagnetic state is discussed in terms of the magnetic frustration.",

keywords = "Chiral soliton, Commensurate to incommensurate transition, Dzyaloshinskii-Moriya interaction, Frustration, Helimagnetism, High frequency ESR, Hysteresis, Weak ferromagnetism",

author = "Toshiyuki Fujita and Yoshikuni Fujimoto and Seitaro Mitsudo and Toshitaka Idehara and Teruo Saito and Yusuke Kousaka and Yano, {Shin Ichiro} and Jun Akimitsu and Kishine, {Jun Ichiro} and Katsuya Inoue and Mitsuhiro Motokawa",

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AU - Fujita, Toshiyuki

AU - Fujimoto, Yoshikuni

AU - Mitsudo, Seitaro

AU - Idehara, Toshitaka

AU - Saito, Teruo

AU - Kousaka, Yusuke

AU - Yano, Shin Ichiro

AU - Akimitsu, Jun

AU - Kishine, Jun Ichiro

AU - Inoue, Katsuya

AU - Motokawa, Mitsuhiro

PY - 2008/5

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N2 - We have studied a commensurate to incommensurate transition in the novel helimagnet CuB2O4 by means of high-frequency ESR. In the commensurate weak ferromagnetic (CWF) state, two ESR modes have been found at low temperatures, which are explained in terms of an electron paramagnetic resonance of the Cu2+ spins at 8d-sites and an antiferromagnetic resonance of the magnetically ordered Cu2+ spins at 4b-sites with the Dzyaloshinskii-Moriya (DM) interaction. The DM interaction among the Cu 2+ spins at 4b-sites that carries the CWF state is evaluated quantitatively. The incommensurate helimagnetic state is discussed in terms of the magnetic frustration.

AB - We have studied a commensurate to incommensurate transition in the novel helimagnet CuB2O4 by means of high-frequency ESR. In the commensurate weak ferromagnetic (CWF) state, two ESR modes have been found at low temperatures, which are explained in terms of an electron paramagnetic resonance of the Cu2+ spins at 8d-sites and an antiferromagnetic resonance of the magnetically ordered Cu2+ spins at 4b-sites with the Dzyaloshinskii-Moriya (DM) interaction. The DM interaction among the Cu 2+ spins at 4b-sites that carries the CWF state is evaluated quantitatively. The incommensurate helimagnetic state is discussed in terms of the magnetic frustration.

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KW - Commensurate to incommensurate transition

KW - Dzyaloshinskii-Moriya interaction

KW - Frustration

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KW - High frequency ESR

KW - Hysteresis

KW - Weak ferromagnetism

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