I would listen to you if I thought you knew what you are talking about, but since you don't, I won't.
The reason for the different behavior of 4He and 3He is quantum mechanics. 4He is a boson. The appearance of the superfluid phase in 4He is related to Bose condensation, where a macroscopic fraction of the atoms is in the lowest-energy one-particle state. 3He is a fermion (like electron) and it is forbidden by the Pauli exclusion principle that more than one fermion is in the same one-particle state. The superfluidity arises from formation of weakly bound pairs of fermions, so called Cooper pairs. The pairs behave as bosons. In the superfluid state there is a macroscopic occupation of a single Cooper pair state.
But, don't let that stop you from carrying on
Of course I know what I am talking about, I wouldn't parrot this stuff if I didn't. zero point temperatures are unattainable, a classical phase transition from liquid to solid is not a true case of a frozen system. Only amateurs could get this wrong, like you.
Edited by OceanBreeze, 05 September 2019 - 11:39 AM.