Investigations of Acoustic Phonons in Metal Films, and theirRole in Non-equilibrium Experiments

本研究涉及声学声子的性质 in thin films薄膜. 这些知识对于明确的 这些系统的非平衡测量的解释。 其目的是获得更完整的声子知识 维度，占用数，以及 不同的固体 所采用的实验技术 联合收割机磁电阻和电子加热实验， 声子光谱学在研究新结构中的应用， 声子性质可以原位改变。 该研究还将 扩大到声衰减的研究， 无序金属薄膜 具有接触和连接的薄膜， 精密的电阻率测量将在新的 可同时测量声音的声腔 衰减和电性能。

The research is concerned with the properties of acoustic phonons in thin films. This knowledge is essential for the unambiguous interpretation of non-equilibrium measurements of these systems. The objective is to obtain a more complete knowledge of phonon dimensionality, occupation number, and transmission between dissimilar solids. The experimental techniques to be employed combine magnetoresistance and electron heating experiments with phonon spectroscopy in the study of novel structures in which the phonon properties can be modified in situ. The research will also be broadened to the investigation of acoutic attenuation in disordered metal films. Films with contacts and connections for precision resistivity measurements will be fabricated inside novel acoutic cavities permitting the simultaneous measurement of sound attenuation and electrical properties.