Unconventional spin fluctuations in the hexagonal antiferromagnet YMnO 3

T. J. Sato; S. H. Lee; T. Katsufuji; M. Masaki; S. Park; J. R.D. Copley; H. Takagi

Unconventional spin fluctuations in the hexagonal antiferromagnet YMnO ₃

T. J. Sato^*, S. H. Lee, T. Katsufuji, M. Masaki, S. Park, J. R.D. Copley, H. Takagi

^*この研究の対応する著者

先進理工学部

研究成果: Article › 査読

83 被引用数 (Scopus)

抄録

We used inelastic neutron scattering to show that well below its Néel temperature, T_N, the two-dimensional (2D) XY nearly triangular antiferromagnet YMnO₃ has a prominent central peak associated with 2D antiferromagnetic fluctuations with a characteristic lifetime of 0.55(5) ps, coexisting with the conventional long-lived spin waves. Existence of the two time scales suggests competition between the Néel phase favored by weak interplane interactions, and the Kosterlitz-Thouless phase intrinsic to the 2D XY spin system.

本文言語	English
論文番号	014432
ページ（範囲）	144321-144325
ページ数	5
ジャーナル	Physical Review B - Condensed Matter and Materials Physics
巻	68
号	1
出版ステータス	Published - 2003 7月 1

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

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引用スタイル

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abstract = "We used inelastic neutron scattering to show that well below its N{\'e}el temperature, TN, the two-dimensional (2D) XY nearly triangular antiferromagnet YMnO3 has a prominent central peak associated with 2D antiferromagnetic fluctuations with a characteristic lifetime of 0.55(5) ps, coexisting with the conventional long-lived spin waves. Existence of the two time scales suggests competition between the N{\'e}el phase favored by weak interplane interactions, and the Kosterlitz-Thouless phase intrinsic to the 2D XY spin system.",

author = "Sato, {T. J.} and Lee, {S. H.} and T. Katsufuji and M. Masaki and S. Park and Copley, {J. R.D.} and H. Takagi",

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T1 - Unconventional spin fluctuations in the hexagonal antiferromagnet YMnO 3

AU - Sato, T. J.

AU - Lee, S. H.

AU - Katsufuji, T.

AU - Masaki, M.

AU - Park, S.

AU - Copley, J. R.D.

AU - Takagi, H.

PY - 2003/7/1

Y1 - 2003/7/1

N2 - We used inelastic neutron scattering to show that well below its Néel temperature, TN, the two-dimensional (2D) XY nearly triangular antiferromagnet YMnO3 has a prominent central peak associated with 2D antiferromagnetic fluctuations with a characteristic lifetime of 0.55(5) ps, coexisting with the conventional long-lived spin waves. Existence of the two time scales suggests competition between the Néel phase favored by weak interplane interactions, and the Kosterlitz-Thouless phase intrinsic to the 2D XY spin system.

AB - We used inelastic neutron scattering to show that well below its Néel temperature, TN, the two-dimensional (2D) XY nearly triangular antiferromagnet YMnO3 has a prominent central peak associated with 2D antiferromagnetic fluctuations with a characteristic lifetime of 0.55(5) ps, coexisting with the conventional long-lived spin waves. Existence of the two time scales suggests competition between the Néel phase favored by weak interplane interactions, and the Kosterlitz-Thouless phase intrinsic to the 2D XY spin system.

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M3 - Article

AN - SCOPUS:0141651794

SN - 0163-1829

VL - 68

SP - 144321

EP - 144325

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 1

M1 - 014432

ER -

Unconventional spin fluctuations in the hexagonal antiferromagnet YMnO 3

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ASJC Scopus subject areas

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Unconventional spin fluctuations in the hexagonal antiferromagnet YMnO ₃