Specific features of the properties of Hg-Te lattice vibrations in Cd1 − y Hg y Te alloys enriched with CdTe
| Autor: | S. P. Kozyrev |
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| Rok vydání: | 2012 |
| Předmět: |
Condensed Matter::Quantum Gases
Materials science Solid-state physics Lattice vibration Condensed Matter Physics Cadmium telluride photovoltaics Electronic Optical and Magnetic Materials Ion Condensed Matter::Materials Science Crystallography Polarizability Lattice (order) Physics::Atomic and Molecular Clusters Tetrahedron Physics::Atomic Physics Physics::Chemical Physics Atomic physics Solid solution |
| Zdroj: | Physics of the Solid State. 54:1857-1863 |
| ISSN: | 1090-6460 1063-7834 |
| Popis: | In alloys (solid solutions) Cd1 − yHgyTe enriched with CdTe, the properties of Hg-Te lattice vibrations are determined by a single-well lattice potential for the Hg atom located at the center of the anion tetrahedron. The HgTe-enriched alloys retain the anomalous properties of Hg-Te lattice vibrations, which are determined by a double-well lattice potential for the Hg atom located in the off-center position at low temperatures; a shallower well of the potential for the Hg atom located at the center of the anion tetrahedron is filled upon thermal activation. The polarizability of the ion pair in the TO mode of Hg-Te lattice vibrations with the Hg atom located at the center of the anion tetrahedron for the CdTe-enriched alloys considerably exceeds the polarizability of the pair with the off-center Hg atom for the HgTe-enriched alloys. |
| Databáze: | OpenAIRE |
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