  Topological materials with boundary (surface/edge/hinge) states have
attracted tremendous research interest. Besides, unconventional (obstructed
atomic) materials have recently drawn lots of attention owing to their
obstructed boundary states. Experimentally, Josephson junctions (JJs)
constructed on materials with boundary states produce the peculiar boundary
supercurrent, which was utilized as a powerful diagnostic approach. Here, we
report the observations of conspicuous hinge supercurrent in NiTe$_2$-based
JJs. Particularly, applying an in-plane magnetic field along the Josephson
current could rapidly suppress the bulk supercurrent and retain the nearly pure
hinge supercurrent, namely the magnetic field filtering of supercurrent.
Further systematic comparative analysis and theoretical calculations
demonstrate the existence of unconventional nature and obstructed hinge states
in NiTe$_2$. Our results revealed the unique hinge states in unconventional
metal NiTe$_2$, and demonstrated in-plane magnetic field as an efficient method
to filter out the futile bulk contributions and thereby to highlight the hinge
states hidden in topological/unconventional materials.
