PathFinder functionality

Introduction on the Use of the Drosophila Embry-onic/Larval Neuromuscular Junction as a Model System to Study Synapse Development and Function, and a Brief Summary of Pathfinding and Target Recognition... 

Thus SmS with its first-order transition was, historically seen, not the best example to study the valence transition in the Sm chalcogenides, but with its low transition pressure and simple alloying it functioned as a pathfinder substance for the others. Only gradually, with more subtle high-pressure techniques, the new picture penetrates the surface. However, there is the old and well known Falicov-Kimball (1969) model which predicted the valence transition in the Sm chalcogenides as due to electronic effects, which seems now to find a late confirmation. 

---