Observation of the thermal conductivity due to spins in the one-dimensional antiferromagnetic ising-like spin system ACoX3 (A = Rb, Cs; X = Cl, Br)

Yoshiharu Matsuoka; Takayuki Kawamata; Koki Naruse; Masumi Ohno; Yoichi Nishiwaki; Tetsuya Kato; Takahiko Sasaki; Yoji Koike

doi:10.7566/JPSJ.83.064603

Observation of the thermal conductivity due to spins in the one-dimensional antiferromagnetic ising-like spin system ACoX₃ (A = Rb, Cs; X = Cl, Br)

Yoshiharu Matsuoka, Takayuki Kawamata, Koki Naruse, Masumi Ohno, Yoichi Nishiwaki, Tetsuya Kato, Takahiko Sasaki, Yoji Koike

IMR - Materials Property Division

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

7 Citations (Scopus)

Abstract

Thermal conductivity measurements have been carried out for single crystals of the one-dimensional (1D) antiferromagnetic (AF) Ising-like spin system ACoX₃ (A = Rb, Cs; X = Cl, Br). A shoulder originating from the thermal conductivity due to spin excitations, -κ _spin , has been observed around 60K in the temperature dependence of the thermal conductivity along the c-axis parallel to spin chains for every ACoX₃. To our knowledge, this is the first observation of -κ _spin in 1D AF Ising-like spin systems. It has been found that the magnitude of -κ _spin in ACoX₃ is a little smaller than those in 1D AF Heisenberg spin systems. The reason is discussed in terms of the Heisenberg-like character in ACoX₃.

Original language	English
Article number	064603
Journal	Journal of the Physical Society of Japan
Volume	83
Issue number	6
DOIs	https://doi.org/10.7566/JPSJ.83.064603
Publication status	Published - 2014 Jun 15

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title = "Observation of the thermal conductivity due to spins in the one-dimensional antiferromagnetic ising-like spin system ACoX3 (A = Rb, Cs; X = Cl, Br)",

abstract = "Thermal conductivity measurements have been carried out for single crystals of the one-dimensional (1D) antiferromagnetic (AF) Ising-like spin system ACoX3 (A = Rb, Cs; X = Cl, Br). A shoulder originating from the thermal conductivity due to spin excitations, -κ spin , has been observed around 60K in the temperature dependence of the thermal conductivity along the c-axis parallel to spin chains for every ACoX3. To our knowledge, this is the first observation of -κ spin in 1D AF Ising-like spin systems. It has been found that the magnitude of -κ spin in ACoX3 is a little smaller than those in 1D AF Heisenberg spin systems. The reason is discussed in terms of the Heisenberg-like character in ACoX3.",

author = "Yoshiharu Matsuoka and Takayuki Kawamata and Koki Naruse and Masumi Ohno and Yoichi Nishiwaki and Tetsuya Kato and Takahiko Sasaki and Yoji Koike",

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T1 - Observation of the thermal conductivity due to spins in the one-dimensional antiferromagnetic ising-like spin system ACoX3 (A = Rb, Cs; X = Cl, Br)

AU - Matsuoka, Yoshiharu

AU - Kawamata, Takayuki

AU - Naruse, Koki

AU - Ohno, Masumi

AU - Nishiwaki, Yoichi

AU - Kato, Tetsuya

AU - Sasaki, Takahiko

AU - Koike, Yoji

PY - 2014/6/15

Y1 - 2014/6/15

N2 - Thermal conductivity measurements have been carried out for single crystals of the one-dimensional (1D) antiferromagnetic (AF) Ising-like spin system ACoX3 (A = Rb, Cs; X = Cl, Br). A shoulder originating from the thermal conductivity due to spin excitations, -κ spin , has been observed around 60K in the temperature dependence of the thermal conductivity along the c-axis parallel to spin chains for every ACoX3. To our knowledge, this is the first observation of -κ spin in 1D AF Ising-like spin systems. It has been found that the magnitude of -κ spin in ACoX3 is a little smaller than those in 1D AF Heisenberg spin systems. The reason is discussed in terms of the Heisenberg-like character in ACoX3.

AB - Thermal conductivity measurements have been carried out for single crystals of the one-dimensional (1D) antiferromagnetic (AF) Ising-like spin system ACoX3 (A = Rb, Cs; X = Cl, Br). A shoulder originating from the thermal conductivity due to spin excitations, -κ spin , has been observed around 60K in the temperature dependence of the thermal conductivity along the c-axis parallel to spin chains for every ACoX3. To our knowledge, this is the first observation of -κ spin in 1D AF Ising-like spin systems. It has been found that the magnitude of -κ spin in ACoX3 is a little smaller than those in 1D AF Heisenberg spin systems. The reason is discussed in terms of the Heisenberg-like character in ACoX3.

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Observation of the thermal conductivity due to spins in the one-dimensional antiferromagnetic ising-like spin system ACoX₃ (A = Rb, Cs; X = Cl, Br)

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