晶体中的原子在其平衡点附近的摇晃会产生振动波,即声子.声子能在固体中传播声、热能和其他形式的能量,测量声子的性质可以提供有关晶体的结构以及原子间相互作用的各种信息.声子的性质一般是利用与光子的声-光相互作用来测定的.但当声波的波长小到只有原子间距的大小时,就很难 The vibration of atoms in the crystal near its equilibrium point produces vibration waves, phonons, which propagate sound, heat, and other forms of energy in solids, and measuring the properties of phonons can provide information about the structure of the crystal and the relationship between the atoms Interactions of Various Information The nature of phonons is generally measured using the acousto-optic interaction with photons, but when the wavelength of an acoustic wave is as small as the distance between atoms, it is difficult