Zero Spin Sound in Antiferromagnetic Metals: Case of Two-Dimensional $t$–$t'$ Hubbard Model
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概要
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It is shown, on the basis of the second order perturbation theory for the Landau Fermi liquid interaction, that the so-called zero spin-sound exists in the antiferromagnetic metallic phase of the two-dimensional $t$–$t'$ Hubbard model. This is consistent with the experiment in the spin-density-wave phase of Cr metal in which both the longitudinal and transverse “spin wave” with the velocity of the order of the Fermi velocity are observed.
- 2010-08-15
著者
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Hattori Kazumasa
Division Of Materials Physics Department Of Materials Engineering Science Graduate School Of Enginee
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Ohta Ryo
Division Of Genetic Toxicology Hatano Research Institute Food And Drug Safety Center
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Ryo Ohta
Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Tsuruta Atsushi
Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Kazumasa Miyake
Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Atsushi Tsuruta
Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Tsuruta Atsushi
Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531
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Kazumasa Hattori
Division of Materials Physics, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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