  In the current work we revisit the pair-potential recently proposed by Wang
et al. (Phys. Chem. Chem. Phys. 10624, 22, 2020) as a well defined finite-range
alternative to the widely used Lennard-Jones interaction model. The advantage
of their proposed potential is that it not only goes smoothly to zero at the
cutoff distance, hence eliminating inconsistencies caused by different
treatments of the truncation, but with changing the range of the potential, it
is capable of describing soft matter-like behaviour as well as traditional
"Lennard-Jones-like" properties. We used the nested sampling method to perform
an unbiased sampling of the potential energy surface, and mapped the
pressure-temperature phase diagram of a range of truncation distances. We found
that the interplay between the location of the energy minimum and interaction
range has a complex and strong effect on both the structural and thermodynamic
properties of the condensed phases. We discuss the appearance of the
liquid-vapour co-existence line and critical point at longer interaction
ranges, as well as the relatively small changes in the melting line. We present
the ground state diagram, demonstrating that different close-packed polytypic
phases appear to be global minima for the model at different pressure and
cutoff values, similar to what had been shown in case of the Lennard-Jones
model. Finally, we compare the lowest energy structure of some of the N < 60
clusters to that of the known minima of Lennard-Jones and Morse potential,
using different cutoff values, revealing a behaviour closely resembling that of
the Morse clusters.
