Paraelectric resonance of centers with icosahedral symmetry |
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Authors: | A B Roitsin L V Artamonov A A Klimov |
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Institution: | (1) Institute of Semiconductor Physics, Ukrainian Academy of Sciences, 252650 Kiev, Ukraine |
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Abstract: | The paraelectric resonance spectrum of non-central impurity ions situated in crystal fields of icosahedral symmetry is predicted.
A multiwell potential is considered that corresponds to the displacement of the ions from the center of symmetry toward the
vertices of the icosahedron, the faces of a dodecahedron, and the pentagonal faces of a fullerene molecule. The effective
Hamiltonian of endohedral complexes in external electric fields with arbitrary orientation is obtained, its eigenvalues are
found, and the line intensities of different transitions between the tunnelling levels are calculated.
Fiz. Tverd. Tela (St. Petersburg) 39, 1693–1698 (September 1997) |
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