Optical Investigation of the Magnetic Excitations in Two- Dimensional Triangular Lattice Antiferromagnets
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概要
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We have investigated exciton-magnon absorption spectra in VX_2 (X=Cl, Br and I) and LiCrO_2 known as two-dimensional Heisenberg triangular lattice antiferromagnets (2DH TAL-AF) in order to study the effect of the peculiar spin frustration on the magnetic elementary excitations. In VX_2 (X=Cl and Br) and LiCrO_2, the temperature dependence of the line width of the exciton-magnon absorption resembles closely that of the density of the characteristic point defects known as Z_2-vortex in 2DH TAL-AF. Thus the line width of the exciton magnon absorption in 2DH TAL-AF exhibits Z_2-vortex induced broadening. We also reported the magnetic Raman scattering in VCl_2 and VI_2.
- 1993-11-15
著者
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KOJIMA Norimichi
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
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Ito Kozo
Department of Chemistry, Faculty of Science, Kyoto University
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Mogi Iwao
Institute for Materials Research, Tohoku University
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Takeda Masayasu
Institute for Materials Research, Tohoku University
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Kido Giyuu
Institute for Materials Research, Tohoku University
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Nakagawa Yasuaki
Institute for Materials Research, Tohoku University
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Sakai Masamichi
Institute for Materials Research, Tohoku University
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Kuroda Noritaka
Institute for Materials Research, Tohoku University
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Nishina Yuichiro
Institute for Materials Research, Tohoku University
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武田 全康
東北大学大学院理学研究科物理学専攻
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黒田 規敬
熊本大学大学院
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小島 憲道
Department Of Basic Science Graduate School Of Arts And Sciences The University Of Tokyo
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仁科 雄一郎
東北大学金属材料研究所
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Mogi Iwao
Institute For Materials Research Tohoku University
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Mogi Iwao
Department Of Chemisty Faculty Of Science Kyoto University:institute For Materials Research Tohoku U
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Mogi I
Institute Of Materials Research Tohoku University
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中川 吉郎
大阪市立大学
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Kido G
National Res. Inst. Metals Tsukuba
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Kido G
National Inst. For Materials Sci. Ibaraki
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Kido Giyuu
Institute For Materials Research Tohoku University
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Kido Giyuu
Nanomaerials Laboratory National Institute For Materials Science
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Kido Giyuu
National Research Institute For Metals
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Takeda M
Univ. Tokyo Tokyo Jpn
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Yoshida N
Institute For Materials Research Tohoku University
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Mogi I
Institute For Materials Research Tohoku University
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Nakagawa Y
Yamanashi Univ. Kofu Jpn
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Kuroda Noritaka
Discovery Research Laboratories V Discovery Research Division Takeda Chemical Industries Ltd.
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Kuroda Noritaka
Institute For Materials Science Tohoku University
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Kuroda Noritaka
Institute For Materials Research Tohoku University
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Takeda M
Japan Atomic Energy Res. Inst. Ibaraki
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Takeda Masayasu
Institute For Materials Research Tohoku University
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Nishina Yuichiro
Institute For Materials Research (imr) Tohoku University
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Nishina Yuichiro
Institute Of Materials Resesrch Tohoku University
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Sakai M
Tohoku Univ. Sendai
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Kojima Norimichi
Department Of Basic Science Graduate School Of Arts And Science The University Of Tokyo
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Ito Kozo
Department Of Chemistry Faculty Of Science Kyoto University
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中川 吉郎
大阪市立大・工
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Nakagawa Yasuaki
Institute For Material Research Tohoku University
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Kido G
Institute For Materials Research Tohoku University
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Kuroda N
Nec Corp. Ibaraki Jpn
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Mogi I
Tohoku Univ. Sendai Jpn
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KURODA Noritaka
Research Institute for Iron, Steel and Other Metals Tohoku University : Tohoku University : Physics Department, Purdue University
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MOGI Iwao
Institute for Matererials Research, Tohoku University
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