Zn-substitution effect on the thermal conductivity of the two-dimensional spin-gap system SrCu2(BO3)2 and the two-dimensional antiferromagnetic system Cu3B2O 6 single-crystals

Kazutaka Kudo; Takashi Noji; Yoji Koike; Terukazu Nishizaki; Norio Kobayashi

doi:10.1016/S0921-4526(02)02597-8

Zn-substitution effect on the thermal conductivity of the two-dimensional spin-gap system SrCu₂(BO₃)₂ and the two-dimensional antiferromagnetic system Cu₃B₂O ₆ single-crystals

Kazutaka Kudo, Takashi Noji, Yoji Koike, Terukazu Nishizaki, Norio Kobayashi

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

5 Citations (Scopus)

Abstract

We have measured the thermal conductivity K in the two-dimensional plane of SrCu_2-xZn_x(BO₃)₂ (x = 0, 0.02) and Cu_3-xZn_xB₂O₆ (x = 0, 0.03) single-crystals grown by the floating-zone method. It has been found that the temperature dependence of k exhibits an anomalous peak in the spin-gap state of SrCu₂(BO₃)₂ and also in the antiferromagnetically ordered state of Cu₃B₂O ₆. Through the partial substitution of Zn for Cu, the peak does not change in the former, while it is strongly reduced in the latter. It is concluded that the peaks observed in SrCu₂(BO₃) ₂ and Cu₃B₂O₆ are caused by the enhancement of K due to phonons and magnons, respectively.

Original language	English
Pages (from-to)	910-911
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)02597-8
Publication status	Published - May 2003
Externally published	Yes

Keywords

Antiferromagnetic order
CuB O
Single crystal
Spin gap
SrCu(BO)
Thermal conductivity
Zn-substitution effect

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(02)02597-8

Cite this

Zn-substitution effect on the thermal conductivity of the two-dimensional spin-gap system SrCu₂(BO₃)₂ and the two-dimensional antiferromagnetic system Cu₃B₂O ₆ single-crystals. / Kudo, Kazutaka; Noji, Takashi; Koike, Yoji et al.
In: Physica B: Condensed Matter, Vol. 329-333, No. II, 05.2003, p. 910-911.

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

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title = "Zn-substitution effect on the thermal conductivity of the two-dimensional spin-gap system SrCu2(BO3)2 and the two-dimensional antiferromagnetic system Cu3B2O 6 single-crystals",

abstract = "We have measured the thermal conductivity K in the two-dimensional plane of SrCu2-xZnx(BO3)2 (x = 0, 0.02) and Cu3-xZnxB2O6 (x = 0, 0.03) single-crystals grown by the floating-zone method. It has been found that the temperature dependence of k exhibits an anomalous peak in the spin-gap state of SrCu2(BO3)2 and also in the antiferromagnetically ordered state of Cu3B2O 6. Through the partial substitution of Zn for Cu, the peak does not change in the former, while it is strongly reduced in the latter. It is concluded that the peaks observed in SrCu2(BO3) 2 and Cu3B2O6 are caused by the enhancement of K due to phonons and magnons, respectively.",

keywords = "Antiferromagnetic order, CuB O, Single crystal, Spin gap, SrCu(BO), Thermal conductivity, Zn-substitution effect",

author = "Kazutaka Kudo and Takashi Noji and Yoji Koike and Terukazu Nishizaki and Norio Kobayashi",

note = "Funding Information: This work was supported by CREST of Japan Science and Technology Corporation and partially supported by the REIMEI Research Resources of Japan Atomic Energy Research Institute. One of the authors (K.K.) was supported by the Japan Society for the Promotion of Science.",

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doi = "10.1016/S0921-4526(02)02597-8",

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AU - Kudo, Kazutaka

AU - Noji, Takashi

AU - Koike, Yoji

AU - Nishizaki, Terukazu

AU - Kobayashi, Norio

N1 - Funding Information: This work was supported by CREST of Japan Science and Technology Corporation and partially supported by the REIMEI Research Resources of Japan Atomic Energy Research Institute. One of the authors (K.K.) was supported by the Japan Society for the Promotion of Science.

PY - 2003/5

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N2 - We have measured the thermal conductivity K in the two-dimensional plane of SrCu2-xZnx(BO3)2 (x = 0, 0.02) and Cu3-xZnxB2O6 (x = 0, 0.03) single-crystals grown by the floating-zone method. It has been found that the temperature dependence of k exhibits an anomalous peak in the spin-gap state of SrCu2(BO3)2 and also in the antiferromagnetically ordered state of Cu3B2O 6. Through the partial substitution of Zn for Cu, the peak does not change in the former, while it is strongly reduced in the latter. It is concluded that the peaks observed in SrCu2(BO3) 2 and Cu3B2O6 are caused by the enhancement of K due to phonons and magnons, respectively.

AB - We have measured the thermal conductivity K in the two-dimensional plane of SrCu2-xZnx(BO3)2 (x = 0, 0.02) and Cu3-xZnxB2O6 (x = 0, 0.03) single-crystals grown by the floating-zone method. It has been found that the temperature dependence of k exhibits an anomalous peak in the spin-gap state of SrCu2(BO3)2 and also in the antiferromagnetically ordered state of Cu3B2O 6. Through the partial substitution of Zn for Cu, the peak does not change in the former, while it is strongly reduced in the latter. It is concluded that the peaks observed in SrCu2(BO3) 2 and Cu3B2O6 are caused by the enhancement of K due to phonons and magnons, respectively.

KW - Antiferromagnetic order

KW - CuB O

KW - Single crystal

KW - Spin gap

KW - SrCu(BO)

KW - Thermal conductivity

KW - Zn-substitution effect

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