论文标题
弹性和热晶体特性的强烈相关的双轴心和温度滞后
Strongly correlated bistable sublattice and temperature hysteresis of elastic and thermal crystal properties
论文作者
论文摘要
结果表明，在具有基础的晶格中，某种类型的原子的合作行为在矩阵晶格的田地的双孔电势中执行光学长波长振动，可能会导致形成双向sublattice。由于这种sublattice的亚稳态状态与基质晶格的振动状态的相互作用，晶体的弹性和热性能获得了异常的，滞后的温度曲线。本文中提出的概念使得获得定性解释，该解释与实验数据一致，即超声波的速度和吸收速度和吸收的滞后温度依赖性，特定的热量以及超导YTTrium yttrium and Bismuth cuprates的热导率。
It is shown that in crystal lattices with a basis the cooperative behavior of a certain type of atoms performing optical long-wavelength vibrations in a double-well potential of the field of the matrix lattice may lead to the formation of a bistable sublattice. As a result of the interaction of the metastable states of such a sublattice with the vibrational states of the matrix lattice, the elastic and thermal properties of the crystal acquire anomalous, hysteresis-like, temperature curves. The concepts developed in the paper make it possible to obtain a qualitative interpretation, which agrees with the experimental data, of the hysteresis-like temperature dependence of the speed and absorption of ultrasonic waves, the specific heat, and the thermal conductivity in superconducting yttrium and bismuth cuprates.
