Relaxation and Acoustic Properties of Localized Electron Lowered Symmetry CentersReportar como inadecuado




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Abstract : Relaxation behavior of electron lowered symmetry centers is considered on the basis of numerical calculation of the Schrödinger equation. The relaxation behavior of these systems is either quantum-mechanical or classical, depending on the temperature. A -tunneling degree- parameter is introduced in order to describe the specific relaxation behavior of these systems in the framework of the both conventional tunneling mode1 and classical Debye relaxation. A comparative analysis for electron lowered symmetry centers in α-quartz, such as E- defect centers, H- ion at E4- centers, and apex OA atoms in high-temperature superconducting cuprates is reported.





Autor: L. Mihailov M. Kirtcheva A. Manov

Fuente: https://hal.archives-ouvertes.fr/



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