Electrons on Helium Films

为了更好地理解二维粒子的物理性质，验证新的理论，并利用电子阵列的特殊性质作为模型系统来研究三维系统的类似物，提出了在氦表面上研究二维电子阵列性质的实验。这些包括弱钉住的电荷密度波和极化子。特别的重点将放在旨在探索量子体制的实验上。量子熔化的性质是主要的兴趣，并将研究电子的相图及其对磁场的依赖。氦薄膜上的电子作为研究极化子和弱钉住电荷密度波的传导特性的模型系统具有明显的优势，因为通过改变薄膜厚度，适当的耦合参数可以从弱极限变化到强极限，并且可以跨越从经典极限到量子极限的范围。

Experiments are proposed to study the properties of two-dimensional arrays of electrons on a helium surface with the purpose of better understanding the physics of particles confined to two-dimensions, to test new theories, and to use the special properties of the electron array as a model system to study analogs of three- dimensional systems. These include weakly-pinned charge-density waves and polarons. Particular emphasis will be placed on experiments designed to probe the quantum regime. The nature of quantum melting is of prime interest, and the phase diagram of electrons and its dependence on magnetic field will be studied. Electrons on helium films have a distinct advantage as a model system to study polarons and the conduction properties of weakly- pinned charge-density waves because the appropriate coupling parameter can be varied from the weak to strong limits by varying the film thickness, and the range from classical to the quantum limit can be spanned.