Nonmagnetic Impurity Effects on S=1/2 Heisenberg Ladder Cu2(C5H12N2)2Cl4

Hiroyuki Deguchi; Shunsaku Sumoto; Seishi Takagi; Masaki Mito; Tatsuya Kawae; Kazuyoshi Takeda; Hiroyuki Nojiri; Takuo Sakon; Mitsuhiro Motokawa; Kazuyoshi Takeda

doi:10.1143/JPSJ.67.3707

Nonmagnetic Impurity Effects on S=1/2 Heisenberg Ladder Cu₂(C₅H₁₂N₂)₂Cl₄

Hiroyuki Deguchi, Shunsaku Sumoto, Seishi Takagi, Masaki Mito, Tatsuya Kawae, Kazuyoshi Takeda, Hiroyuki Nojiri, Takuo Sakon, Mitsuhiro Motokawa, Kazuyoshi Takeda

Institute for Materials Research (IMR) (institute affiliation only)

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

10 Citations (Scopus)

Abstract

Magnetic measurements have been performed to investigate nonmagnetic impurity effects on a Zn-doped ladder system (Cui_1-ϰZnϰ)₂(C₅H₁₂N₂)₂Cl₄. The paramagnetic contribution in the susceptibility ϰˊ of the Zn-doped system increases with increasing ϰ below the gap temperature. The susceptibility obeys the Curie law in the temperature range between 0.5 K and 2 K. However, at temperatures below 0.5 K. ϰˊT drops with decreasing temperature, which suggests the crossover in the Curie constant as predicted by Sigrist and Furusaki [J. Phys. Soc. Jpn. 65 (1996) 2385]. Magnetization curves of the Zn-doped system are compared with that of the pure system. The impurity-induced spin behaves like a paramagnetic S= 1/2 spin and the spin-gap state survives even in the Zn-doped system with the content ϰ up to 0.117. These results seem to originate from the weak interladder interaction of the system.

Original language	English
Pages (from-to)	3707-3710
Number of pages	4
Journal	journal of the physical society of japan
Volume	67
Issue number	11
DOIs	https://doi.org/10.1143/JPSJ.67.3707
Publication status	Published - 1998 Jan 1

Keywords

Cu(CHN)Cl
impurity effect
spin gap
spin ladder

ASJC Scopus subject areas

Physics and Astronomy(all)

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Nonmagnetic Impurity Effects on S=1/2 Heisenberg Ladder Cu₂(C₅H₁₂N₂)₂Cl₄. / Deguchi, Hiroyuki; Sumoto, Shunsaku; Takagi, Seishi; Mito, Masaki; Kawae, Tatsuya; Takeda, Kazuyoshi; Nojiri, Hiroyuki; Sakon, Takuo; Motokawa, Mitsuhiro; Takeda, Kazuyoshi.

In: journal of the physical society of japan, Vol. 67, No. 11, 01.01.1998, p. 3707-3710.

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

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title = "Nonmagnetic Impurity Effects on S=1/2 Heisenberg Ladder Cu2(C5H12N2)2Cl4",

abstract = "Magnetic measurements have been performed to investigate nonmagnetic impurity effects on a Zn-doped ladder system (Cui1-ϰZnϰ)2(C5H12N2)2Cl4. The paramagnetic contribution in the susceptibility ϰˊ of the Zn-doped system increases with increasing ϰ below the gap temperature. The susceptibility obeys the Curie law in the temperature range between 0.5 K and 2 K. However, at temperatures below 0.5 K. ϰˊT drops with decreasing temperature, which suggests the crossover in the Curie constant as predicted by Sigrist and Furusaki [J. Phys. Soc. Jpn. 65 (1996) 2385]. Magnetization curves of the Zn-doped system are compared with that of the pure system. The impurity-induced spin behaves like a paramagnetic S= 1/2 spin and the spin-gap state survives even in the Zn-doped system with the content ϰ up to 0.117. These results seem to originate from the weak interladder interaction of the system.",

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author = "Hiroyuki Deguchi and Shunsaku Sumoto and Seishi Takagi and Masaki Mito and Tatsuya Kawae and Kazuyoshi Takeda and Hiroyuki Nojiri and Takuo Sakon and Mitsuhiro Motokawa and Kazuyoshi Takeda",

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AU - Mito, Masaki

AU - Kawae, Tatsuya

AU - Takeda, Kazuyoshi

AU - Nojiri, Hiroyuki

AU - Sakon, Takuo

AU - Motokawa, Mitsuhiro

AU - Takeda, Kazuyoshi

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N2 - Magnetic measurements have been performed to investigate nonmagnetic impurity effects on a Zn-doped ladder system (Cui1-ϰZnϰ)2(C5H12N2)2Cl4. The paramagnetic contribution in the susceptibility ϰˊ of the Zn-doped system increases with increasing ϰ below the gap temperature. The susceptibility obeys the Curie law in the temperature range between 0.5 K and 2 K. However, at temperatures below 0.5 K. ϰˊT drops with decreasing temperature, which suggests the crossover in the Curie constant as predicted by Sigrist and Furusaki [J. Phys. Soc. Jpn. 65 (1996) 2385]. Magnetization curves of the Zn-doped system are compared with that of the pure system. The impurity-induced spin behaves like a paramagnetic S= 1/2 spin and the spin-gap state survives even in the Zn-doped system with the content ϰ up to 0.117. These results seem to originate from the weak interladder interaction of the system.

AB - Magnetic measurements have been performed to investigate nonmagnetic impurity effects on a Zn-doped ladder system (Cui1-ϰZnϰ)2(C5H12N2)2Cl4. The paramagnetic contribution in the susceptibility ϰˊ of the Zn-doped system increases with increasing ϰ below the gap temperature. The susceptibility obeys the Curie law in the temperature range between 0.5 K and 2 K. However, at temperatures below 0.5 K. ϰˊT drops with decreasing temperature, which suggests the crossover in the Curie constant as predicted by Sigrist and Furusaki [J. Phys. Soc. Jpn. 65 (1996) 2385]. Magnetization curves of the Zn-doped system are compared with that of the pure system. The impurity-induced spin behaves like a paramagnetic S= 1/2 spin and the spin-gap state survives even in the Zn-doped system with the content ϰ up to 0.117. These results seem to originate from the weak interladder interaction of the system.

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