Antiferromagnetic ordering in the spin ladder compound; Sr14-xCaxCu24O41

Takashi Nagata; Hirokazu Fujino; Kaname Satoh; Naoyuki Yamamori; Jun Akimitsu; Susumu Katano; Masakazu Nishi; Kazuhisa Kakurai; Masahiko Hiroi; Masafumi Sera; Norio Kobayashi; Kenichi Tenya; Hiroshi Amitsuka; Tomoko Takigawa; Hironobu Inago; Toshiro Sakakibara

doi:10.1143/JPSJ.70.2419

Antiferromagnetic ordering in the spin ladder compound; Sr_14-xCa_xCu₂₄O₄₁

Takashi Nagata, Hirokazu Fujino, Kaname Satoh, Naoyuki Yamamori, Jun Akimitsu, Susumu Katano, Masakazu Nishi, Kazuhisa Kakurai, Masahiko Hiroi, Masafumi Sera, Norio Kobayashi, Kenichi Tenya, Hiroshi Amitsuka, Tomoko Takigawa, Hironobu Inago, Toshiro Sakakibara

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

We report specific heat, magnetic susceptibility and neutron scattering measurements on the single crystals of Sr_14-xCa_xCu₂₄O₄₁. The specific heat data of Sr_2.5Ca_11.5Cu₂₄O₄₁ (x = 11.5) showed a sharp phase transition at T_N ≈ 2.3 K, and T_N was decreased with decreasing the Ca content x. Susceptibility measurements for x = 9, 10 and 11.5 revealed that this phase transition is due to antiferromagnetic ordering. In the neutron scattering experiments for x = 10 and 11.5, we observed several Bragg peaks, corresponding to the antiferromagnetic ordering confirmed in the specific heat and susceptibility measurements. A possible magnetic structure on the chain and ladder sites has been proposed. In this system, the singlet state and antiferromagnetic ordering induced by Ca substitution for Sr coexist at ambient pressure and the dissolved hole pairs move under high pressure, leading to the occurrence of superconductivity.

Original language	English
Pages (from-to)	2419-2424
Number of pages	6
Journal	journal of the physical society of japan
Volume	70
Issue number	8
DOIs	https://doi.org/10.1143/JPSJ.70.2419
Publication status	Published - Aug 1 2001
Externally published	Yes

Keywords

Antiferromagnetic
Ladder
Spin-gap

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.70.2419

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Nagata, T., Fujino, H., Satoh, K., Yamamori, N., Akimitsu, J., Katano, S., Nishi, M., Kakurai, K., Hiroi, M., Sera, M., Kobayashi, N., Tenya, K., Amitsuka, H., Takigawa, T., Inago, H., & Sakakibara, T. (2001). Antiferromagnetic ordering in the spin ladder compound; Sr_14-xCa_xCu₂₄O₄₁. journal of the physical society of japan, 70(8), 2419-2424. https://doi.org/10.1143/JPSJ.70.2419

Antiferromagnetic ordering in the spin ladder compound; Sr_14-xCa_xCu₂₄O₄₁. / Nagata, Takashi; Fujino, Hirokazu; Satoh, Kaname; Yamamori, Naoyuki; Akimitsu, Jun; Katano, Susumu; Nishi, Masakazu; Kakurai, Kazuhisa; Hiroi, Masahiko; Sera, Masafumi; Kobayashi, Norio; Tenya, Kenichi; Amitsuka, Hiroshi; Takigawa, Tomoko; Inago, Hironobu; Sakakibara, Toshiro.

In: journal of the physical society of japan, Vol. 70, No. 8, 01.08.2001, p. 2419-2424.

Research output: Contribution to journal › Article

Nagata, T, Fujino, H, Satoh, K, Yamamori, N, Akimitsu, J, Katano, S, Nishi, M, Kakurai, K, Hiroi, M, Sera, M, Kobayashi, N, Tenya, K, Amitsuka, H, Takigawa, T, Inago, H & Sakakibara, T 2001, 'Antiferromagnetic ordering in the spin ladder compound; Sr_14-xCa_xCu₂₄O₄₁', journal of the physical society of japan, vol. 70, no. 8, pp. 2419-2424. https://doi.org/10.1143/JPSJ.70.2419

Nagata, Takashi ; Fujino, Hirokazu ; Satoh, Kaname ; Yamamori, Naoyuki ; Akimitsu, Jun ; Katano, Susumu ; Nishi, Masakazu ; Kakurai, Kazuhisa ; Hiroi, Masahiko ; Sera, Masafumi ; Kobayashi, Norio ; Tenya, Kenichi ; Amitsuka, Hiroshi ; Takigawa, Tomoko ; Inago, Hironobu ; Sakakibara, Toshiro. / Antiferromagnetic ordering in the spin ladder compound; Sr_14-xCa_xCu₂₄O₄₁. In: journal of the physical society of japan. 2001 ; Vol. 70, No. 8. pp. 2419-2424.

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abstract = "We report specific heat, magnetic susceptibility and neutron scattering measurements on the single crystals of Sr14-xCaxCu24O41. The specific heat data of Sr2.5Ca11.5Cu24O41 (x = 11.5) showed a sharp phase transition at TN ≈ 2.3 K, and TN was decreased with decreasing the Ca content x. Susceptibility measurements for x = 9, 10 and 11.5 revealed that this phase transition is due to antiferromagnetic ordering. In the neutron scattering experiments for x = 10 and 11.5, we observed several Bragg peaks, corresponding to the antiferromagnetic ordering confirmed in the specific heat and susceptibility measurements. A possible magnetic structure on the chain and ladder sites has been proposed. In this system, the singlet state and antiferromagnetic ordering induced by Ca substitution for Sr coexist at ambient pressure and the dissolved hole pairs move under high pressure, leading to the occurrence of superconductivity.",

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AU - Nagata, Takashi

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AU - Satoh, Kaname

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AU - Akimitsu, Jun

AU - Katano, Susumu

AU - Nishi, Masakazu

AU - Kakurai, Kazuhisa

AU - Hiroi, Masahiko

AU - Sera, Masafumi

AU - Kobayashi, Norio

AU - Tenya, Kenichi

AU - Amitsuka, Hiroshi

AU - Takigawa, Tomoko

AU - Inago, Hironobu

AU - Sakakibara, Toshiro

PY - 2001/8/1

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N2 - We report specific heat, magnetic susceptibility and neutron scattering measurements on the single crystals of Sr14-xCaxCu24O41. The specific heat data of Sr2.5Ca11.5Cu24O41 (x = 11.5) showed a sharp phase transition at TN ≈ 2.3 K, and TN was decreased with decreasing the Ca content x. Susceptibility measurements for x = 9, 10 and 11.5 revealed that this phase transition is due to antiferromagnetic ordering. In the neutron scattering experiments for x = 10 and 11.5, we observed several Bragg peaks, corresponding to the antiferromagnetic ordering confirmed in the specific heat and susceptibility measurements. A possible magnetic structure on the chain and ladder sites has been proposed. In this system, the singlet state and antiferromagnetic ordering induced by Ca substitution for Sr coexist at ambient pressure and the dissolved hole pairs move under high pressure, leading to the occurrence of superconductivity.

AB - We report specific heat, magnetic susceptibility and neutron scattering measurements on the single crystals of Sr14-xCaxCu24O41. The specific heat data of Sr2.5Ca11.5Cu24O41 (x = 11.5) showed a sharp phase transition at TN ≈ 2.3 K, and TN was decreased with decreasing the Ca content x. Susceptibility measurements for x = 9, 10 and 11.5 revealed that this phase transition is due to antiferromagnetic ordering. In the neutron scattering experiments for x = 10 and 11.5, we observed several Bragg peaks, corresponding to the antiferromagnetic ordering confirmed in the specific heat and susceptibility measurements. A possible magnetic structure on the chain and ladder sites has been proposed. In this system, the singlet state and antiferromagnetic ordering induced by Ca substitution for Sr coexist at ambient pressure and the dissolved hole pairs move under high pressure, leading to the occurrence of superconductivity.

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KW - Ladder

KW - Spin-gap

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