Spin Dynamics of a One Dimensional Ising-Like Antiferromagnet in a Transverse Magnetic Field
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概要
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The effect of the transverse magnetic field h_x on the spin dynamics of a one dimensional Ising-like S=1/2 antiferromagnet is discussed. Based on a picture of the propagating domain walls, we obtain dynamical spin correlation functions along the magnetic field S^<xx>(k,ω) and perpendicular to it S^<yy>(k,ω). A remarkable effect is seen in S^<yy>(k,ω) for π/2≦k≦π, where the spectral weight moves toward the low energy side with the increase of h_x. The theory is applied to the analysis of the spin dynamics of CsCoCl_3, taking into account weak interchain interactions. Zeeman ladders occur and S^<yy>(k,ω) for k〜π exhibits a novel feature under the existence of h_x.
- 社団法人日本物理学会の論文
- 1995-01-15
著者
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Murao Kohei
Department Of Anesthesiology Kansai Medical University
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Murao K
Tohoku Univ. Sendai
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INAWASHIRO Sakari
Department of Computer Science, Nihon University
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Matsubara Fumitaka
Department Of Applied Physics Faculty Of Engineering The University Of Tohoku
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Inawashiro Sakari
Department Of Applied Physics Faculty Of Engineering Toyoku University
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