  The physics of moir'e superlattices and the resulting formation of mini-bands
in van der Waals materials have opened up an exciting new field in condensed
matter physics. These systems exhibit a rich phase diagram of novel physical
phenomena and exotic correlated phases that emerge in the low-dispersing bands.
Transition metal dichalcogenides, in particular, molybdenum disulfide (MoS2),
are potential candidates to extend the studies on moir'e electronics beyond
graphene. Our transport spectroscopy measurements and analysis reveal a
correlation-driven phase transition and the emergence of discrete mini-bands in
MoS2 moir'e superlattices that remained elusive so far. We resolve these
mini-bands arising from quantum mechanical tunneling through Schottky barriers
between the MoS2 and its metallic leads. Energy scales deduced from a first
approach exhibit an astounding agreement with our experimental observations.
The behavior under thermal activation suggests a Lifshitz phase transition at
low temperatures that is driven by a complete spin-valley symmetry breaking.
These intriguing observations bring out the potential of twisted MoS2 to
explore correlated electron states and associated physics.
