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Property of Van Hove Critical Points in Fractional-Dimensional Space |
YU Zhaoxian;MO Dang |
Department of Physics, Zhongshan University, Guangzhou 510275 |
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Cite this article: |
YU Zhaoxian, MO Dang 1993 Chin. Phys. Lett. 10 385-388 |
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Abstract The model of fractional-dimensional space is used to study dielectric function associated with electron interband transitions near a Van Hove critical point in anisotropic systems. Using fractional derivative spectra (FDS) method, it is found that in fractional-dimensional space only a minimum yields a symmetric Lorentzian line shape in FDS but a maximum does not.
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Keywords:
02.10.+w
71.20.Ad
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Published: 01 July 1993
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