Pressure dependence of two-level systems in disordered atomic chain |
| |
Authors: | A Shelkan V Hizhnyakov |
| |
Institution: | aInstitute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia |
| |
Abstract: | The dependence of two-level systems in disordered atomic chain on pressure, both positive and negative was studied numerically. The disorder was produced through the use of interatomic pair potentials having more than one energy minimum. It was found that there exists a correlation between the energy separation of the minima of two-level systems Δ and the variation of this separation with pressure. The correlation may have either positive or negative sign, implying that the asymmetry of two-level systems may in average increase or decrease with pressure depending on the interplay of different interactions between atoms in disordered state. The values of Δ depend on the sign of pressure. |
| |
Keywords: | Disordered solids Discrete systems High-pressure effects |
本文献已被 ScienceDirect 等数据库收录! |
|