Collective Modes and Response Functions for the BGD Model
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概要
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The method of the self-consistent harmonic approximation is applied to the BGD model expressed by the phase Hamiltonian, which is derived by Luther et al. An excitation gap is obtained in case -2<g_1^<||>/(πv_F)<0, where the quantity g_1^|| denotes the interaction of the backward scattering part of parallel spin. In this case, response functions of both CDW and TS are divergent as T→0. Results are compared with other work.
- 理論物理学刊行会の論文
- 1979-01-25
著者
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Suzumura Y
名古屋大 大学院理学研究科
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Suzumura Yoshikazu
Department Of Physics Faculty Of Science Tohoku University
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