Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold

Kazuyoshi Takeda; Osamu Fujita; Masaki Mito; Tatsuya Kawae; Masako Hitaka; Hiroyuki Deguchi; Yoshinori Muraoka; Kazuo Yamagata

doi:10.1080/10587250210734

Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold

Kazuyoshi Takeda, Osamu Fujita, Masaki Mito, Tatsuya Kawae, Masako Hitaka, Hiroyuki Deguchi, Yoshinori Muraoka, Kazuo Yamagata

Applied Physics

Research output: Contribution to journal › Conference article

Abstract

The reduction of the magnetic ordering temperature has been studied in the quasi-two-dimensional square lattice Heisenberg magnet, Mn(HCOO) ₂2(NH₂)₂CO(T_N(1)=3.77 K) with the spin value 5=5/2, randomly diluted with non-magnetic Cd²⁺ ions. It is found that, as the dilution proceeds, the Neel temperature T_N(x) goes down toward 0 K around at x=0.65, higher than x_p =0.59 for the square lattice, making the contrast to the cases of the diluted Ising system and La₂CuO₄, a high Tc superconducting parent compound with 5=1/2: The critical index φ in TN(X)∼(x-x_p)^1/φ is suggested φ<1 for the Heisenberg and φ>1 for the Ising systems.

Original language	English
Pages (from-to)	315-320
Number of pages	6
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume	376
DOIs	https://doi.org/10.1080/10587250210734
Publication status	Published - Dec 1 2002
Event	Proceedings of the Interdisciplinary Symposium on Multifunctionality of Inorganic , Organic, and Their Hybrid Solids - Honolulu, HI, United States Duration: Dec 15 2000 → Dec 18 2000

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1080/10587250210734

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Takeda, K., Fujita, O., Mito, M., Kawae, T., Hitaka, M., Deguchi, H., Muraoka, Y., & Yamagata, K. (2002). Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold. Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 376, 315-320. https://doi.org/10.1080/10587250210734

Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold. / Takeda, Kazuyoshi; Fujita, Osamu; Mito, Masaki; Kawae, Tatsuya; Hitaka, Masako; Deguchi, Hiroyuki; Muraoka, Yoshinori; Yamagata, Kazuo.

In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 376, 01.12.2002, p. 315-320.

Research output: Contribution to journal › Conference article

Takeda, K, Fujita, O, Mito, M, Kawae, T, Hitaka, M, Deguchi, H, Muraoka, Y & Yamagata, K 2002, 'Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold', Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, vol. 376, pp. 315-320. https://doi.org/10.1080/10587250210734

Takeda, Kazuyoshi ; Fujita, Osamu ; Mito, Masaki ; Kawae, Tatsuya ; Hitaka, Masako ; Deguchi, Hiroyuki ; Muraoka, Yoshinori ; Yamagata, Kazuo. / Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold. In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals. 2002 ; Vol. 376. pp. 315-320.

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title = "Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold",

abstract = "The reduction of the magnetic ordering temperature has been studied in the quasi-two-dimensional square lattice Heisenberg magnet, Mn(HCOO) 22(NH2)2CO(TN(1)=3.77 K) with the spin value 5=5/2, randomly diluted with non-magnetic Cd2+ ions. It is found that, as the dilution proceeds, the Neel temperature TN(x) goes down toward 0 K around at x=0.65, higher than xp =0.59 for the square lattice, making the contrast to the cases of the diluted Ising system and La2CuO4, a high Tc superconducting parent compound with 5=1/2: The critical index φ in TN(X)∼(x-xp)1/φ is suggested φ<1 for the Heisenberg and φ>1 for the Ising systems.",

author = "Kazuyoshi Takeda and Osamu Fujita and Masaki Mito and Tatsuya Kawae and Masako Hitaka and Hiroyuki Deguchi and Yoshinori Muraoka and Kazuo Yamagata",

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T1 - Spin correlations on a site diluted square lattice heisenberg antiferromagnet covering the percolation threshold

AU - Takeda, Kazuyoshi

AU - Fujita, Osamu

AU - Mito, Masaki

AU - Kawae, Tatsuya

AU - Hitaka, Masako

AU - Deguchi, Hiroyuki

AU - Muraoka, Yoshinori

AU - Yamagata, Kazuo

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N2 - The reduction of the magnetic ordering temperature has been studied in the quasi-two-dimensional square lattice Heisenberg magnet, Mn(HCOO) 22(NH2)2CO(TN(1)=3.77 K) with the spin value 5=5/2, randomly diluted with non-magnetic Cd2+ ions. It is found that, as the dilution proceeds, the Neel temperature TN(x) goes down toward 0 K around at x=0.65, higher than xp =0.59 for the square lattice, making the contrast to the cases of the diluted Ising system and La2CuO4, a high Tc superconducting parent compound with 5=1/2: The critical index φ in TN(X)∼(x-xp)1/φ is suggested φ<1 for the Heisenberg and φ>1 for the Ising systems.

AB - The reduction of the magnetic ordering temperature has been studied in the quasi-two-dimensional square lattice Heisenberg magnet, Mn(HCOO) 22(NH2)2CO(TN(1)=3.77 K) with the spin value 5=5/2, randomly diluted with non-magnetic Cd2+ ions. It is found that, as the dilution proceeds, the Neel temperature TN(x) goes down toward 0 K around at x=0.65, higher than xp =0.59 for the square lattice, making the contrast to the cases of the diluted Ising system and La2CuO4, a high Tc superconducting parent compound with 5=1/2: The critical index φ in TN(X)∼(x-xp)1/φ is suggested φ<1 for the Heisenberg and φ>1 for the Ising systems.

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