Monolayer Physics

提出的计划包括三个主要领域：润湿和生长，表面熔化，量子单层和多层。润湿和生长的研究涉及多层薄膜的外延和完善，受衬底诱导应变、动力学和亚稳态的影响。表面边缘熔化研究强调边界效应和液固两相之间的界面。比较氢同位素的晶体-熔体界面和较重原子的薄膜将检验量子效应。边缘熔化是一维的，而表面熔化是二维的。量子系统的研究将强调表现出量子效应和维度之间相互作用的相变，例如单个层的临界点和三相点，氦- 4和氢在结晶MgO上吸附的粗糙化和可能的二维超流动性。

The proposed program contains three major areas: Wetting and growth, surface melting, and quantum monolayers and multilayers. The wetting and growth studies deal with the epitaxy and perfection of multilayer films, as influenced by substrate- induced strain, dynamics and metastability. Surface edge melting studies emphasize boundary effects and interfaces between the liquid and solid phases. Comparisons between the crystal-melt interfaces of hydrogen isotopes and films of heavier atoms will test for quantum effects. Edge melting relates to one-dimensional behavior versus the two-d character of surface melting. Studies of quantum systems will emphasize phase transitions exhibiting an interplay between quantum effects and dimensionality, such as critical and triple points of individual layers, roughening and possible two-dimensional superfluidity of helium-four and hydrogen adsorbed on crystalline MgO.