Neutron Scattering Study of a One-Dimensional Ising-Like Antiferromagnet CsCoCl_3. II. Spin Dynamics
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概要
- 論文の詳細を見る
Following the previous study on the 10 Ising antiferrormagnet CsCoCl., thedynamical spin correlation has been studied in a wide range of. temperature.The observed spin wave spectrum is Ising-like with J/k= 75 K but the temperaturedependence is tmusual. No softening of the spin wave frequencies occurs, butthe peak becomes broad and the intensity falls off with increasing temperaturefrom the high q side. Well behaved spin wave peaks whose wave lengths are muchlonger than the correlation length zc-" can be observed. Discussions are givenof the criteria for the existing of spin waves. The longitudinal correlation cannotbe described by the simple rigorous solution of diffusive type with reasonableparameters especially at T<?J?/k. Villain's theory of propagative relaxation ispromising indicating importance of off-diagonal terms contained in theHamiltonian.
- 社団法人日本物理学会の論文
- 1979-02-15
著者
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HIRAKAWA Kinshiro
Institute for Solid State Physics,University of Tokyo
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Yoshizawa Hideki
The Institute For Solid State Physics The University Of Tokyo
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Hirakawa Kinshiro
The Institute For Solid State Physics The University Of Tokyo
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Hirakawa Kinshiro
The Institute For Solid State Physics University Of Tokyo
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Hirakawa Kinshiro
The Institute For State Physics The University Of Tokyo
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Hirakawa Kinshiro
The Institute Of Solid State Physics The University Of Tokyo
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Hirakawa Kinshiro
Instiute For Solid State Physics University Of Tokyo
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Hirakawa Kinshiro
Institure For Solid State Physics University Of Tokyo
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