Hidden glassy behaviors in an ideal Heisenberg Kagomé antiferromagnet

J. D. Lee

doi:10.1016/j.jmmm.2004.11.479

Hidden glassy behaviors in an ideal Heisenberg Kagomé antiferromagnet

J. D. Lee

Department of Physics and Chemistry

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

2 Scopus citations

Abstract

Dynamics of classical Heisenberg spins Si on the Kagomé lattice has been studied. An ideal Heisenberg Kagomé antiferromagnet is known to remain disordered down to T=0 due to the macroscopic degeneracy of the ground state. However, we find that Si and their planar components si in the thermally selected coplanar nematic state behave in a qualitatively different way and especially planar spins (si) show the exotic glass-like transition in the very low temperature T∼0.003J (J: spin exchange). The glassy behaviors of si would be found to be driven by the spin-nematic fluctuations, different from ordinary spin glasses by disorders or anisotropies.

Original language	English
Pages (from-to)	462-467
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	292
DOIs	https://doi.org/10.1016/j.jmmm.2004.11.479
State	Published - Apr 2005

Bibliographical note

Funding Information:
Technical helps on the parallel computation from Jiao Lin and Tim Kelley are appreciated. This work was supported by the US Department of Energy under Contract DE-FG03-01ER45950 and was also performed through Special Coordination Funds for Promoting Science and Technology from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government.

Keywords

A. Spin glasses
D. Phase transition
D. Spin dynamics

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10.1016/j.jmmm.2004.11.479

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title = "Hidden glassy behaviors in an ideal Heisenberg Kagom{\'e} antiferromagnet",

abstract = "Dynamics of classical Heisenberg spins Si on the Kagom{\'e} lattice has been studied. An ideal Heisenberg Kagom{\'e} antiferromagnet is known to remain disordered down to T=0 due to the macroscopic degeneracy of the ground state. However, we find that Si and their planar components si in the thermally selected coplanar nematic state behave in a qualitatively different way and especially planar spins (si) show the exotic glass-like transition in the very low temperature T∼0.003J (J: spin exchange). The glassy behaviors of si would be found to be driven by the spin-nematic fluctuations, different from ordinary spin glasses by disorders or anisotropies.",

keywords = "A. Spin glasses, D. Phase transition, D. Spin dynamics",

author = "Lee, \{J. D.\}",

note = "Funding Information: Technical helps on the parallel computation from Jiao Lin and Tim Kelley are appreciated. This work was supported by the US Department of Energy under Contract DE-FG03-01ER45950 and was also performed through Special Coordination Funds for Promoting Science and Technology from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government.",

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doi = "10.1016/j.jmmm.2004.11.479",

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T1 - Hidden glassy behaviors in an ideal Heisenberg Kagomé antiferromagnet

AU - Lee, J. D.

N1 - Funding Information: Technical helps on the parallel computation from Jiao Lin and Tim Kelley are appreciated. This work was supported by the US Department of Energy under Contract DE-FG03-01ER45950 and was also performed through Special Coordination Funds for Promoting Science and Technology from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government.

PY - 2005/4

Y1 - 2005/4

N2 - Dynamics of classical Heisenberg spins Si on the Kagomé lattice has been studied. An ideal Heisenberg Kagomé antiferromagnet is known to remain disordered down to T=0 due to the macroscopic degeneracy of the ground state. However, we find that Si and their planar components si in the thermally selected coplanar nematic state behave in a qualitatively different way and especially planar spins (si) show the exotic glass-like transition in the very low temperature T∼0.003J (J: spin exchange). The glassy behaviors of si would be found to be driven by the spin-nematic fluctuations, different from ordinary spin glasses by disorders or anisotropies.

AB - Dynamics of classical Heisenberg spins Si on the Kagomé lattice has been studied. An ideal Heisenberg Kagomé antiferromagnet is known to remain disordered down to T=0 due to the macroscopic degeneracy of the ground state. However, we find that Si and their planar components si in the thermally selected coplanar nematic state behave in a qualitatively different way and especially planar spins (si) show the exotic glass-like transition in the very low temperature T∼0.003J (J: spin exchange). The glassy behaviors of si would be found to be driven by the spin-nematic fluctuations, different from ordinary spin glasses by disorders or anisotropies.

KW - A. Spin glasses

KW - D. Phase transition

KW - D. Spin dynamics

UR - https://www.scopus.com/pages/publications/15844428715

U2 - 10.1016/j.jmmm.2004.11.479

DO - 10.1016/j.jmmm.2004.11.479

M3 - Article

AN - SCOPUS:15844428715

SN - 0304-8853

VL - 292

SP - 462

EP - 467

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

Hidden glassy behaviors in an ideal Heisenberg Kagomé antiferromagnet

Abstract

Bibliographical note

Keywords

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