ON POSSIBILITY OF SUPERFLUIDITY IN THE SY STEM OF SURFACE ELECTRONS PAIRED WITH SUBSTRATE HOLES

A new 28 system which consists of surface electrons on superfluid heli um (also hydrogen or neon) film which are paired with the substrate ho les is proposed. The case of low concentration when the size of the el ectron-hole pair is much smaller than the average distance between the m is considered. The coupling energy and size of the electron-hole pai r are obtained. The temperature of the superfluid transition T-c is es timated. The conditions when crystallization temperature T-m is smalle r than T-c and crystallization is absent down to zero are determined. The question about localization of the pairs by impurities and irrequl arities of the substrate is considered. The density of impurities belo w which localization of the pairs does not essentially affect the phas e slate or the system is obtained. The experiments to detect the analy zed phenomena are proposed.