The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …

Van der Waals (vdW) materials of transition metal dichalcogenides (TMD) family with
semiconducting properties are currently at the forefront of research in the field of …

Resolving momentum degrees of freedom of excitons, which are electron-hole pairs bound
by the Coulomb attraction in a photoexcited semiconductor, has remained an elusive goal …

Among the variety of correlated states exhibited by twisted bilayer graphene, cascades in
the spectroscopic properties and in the electronic compressibility occur over larger ranges of …

Angle-resolved photoemission spectroscopy using a micro-focused beam spot [micro-angle-
resolved photoemission spectroscopy (ARPES)] is becoming a powerful tool to elucidate key …

Electronic structures are critical characteristics that determine the electrical, magnetic and
optical properties of materials. With the capability of directly visualizing band dispersions …

Van der Waals (vdW) materials at their 2D limit are diverse, flexible, and unique laboratories
to study fundamental quantum phenomena and their future applications. Their novel …

Axion insulators possess a quantized axion field θ= π protected by combined lattice and
time-reversal symmetry, holding great potential for device applications in layertronics and …

This review outlines fundamental principles, instrumentation, and capabilities of angle-
resolved photoemission spectroscopy (ARPES) and microscopy. We will present how high …

As the field of nanocrystal-based optoelectronics matures, more advanced techniques must
be developed in order to reveal the electronic structure of nanocrystals, particularly with …