Bound state of a 3He atom at the interface of crystal and superfluid 4He

The bound state of a 3He atom at the interface between coexisting crystalline and superfluid phases 4He is studied theoretically by means first principle Quantum Monte Carlo simulations. We consider both case solid/superfluid interface, as well that few solid layers forming on an attractive substrate. It observed sharply localized in well-defined, quasi-2D layer region intermediate liquid. which resides displays intriguing interplay atomic localization quantum-mechanical exchanges; not necessarily “non-solid” layer, suggested previous studies, it affected strength