Influence of Corrugation of Adsorption Potential on Competition of Multiple-Spin-Exchanges

摘要: In the heat-capacity (C) measurements of submonolayer and low-density second layer 3 He solid films adsorbed on graphitc surfaces, anomalous C T α (α -1) dependence has been observed in wide temperature ranges. It is attributed to strong competition between several multiple spin exchange (MSE) interactions. And thougth be caused by corrugation adsorption potential substrate. The detailed analysis shows that coverage-dependence exponent some features. These features can explained change strength MSE due structure, i.e., existence zero-point vacancy, commensurale-incommensurate phase transition, specific structures. This supports responsible T-dependence C.