The crystal structure of a solid largely dictates its electronic, optical and mechanical
properties. Indeed, much of the exploration of quantum materials in recent years including …

As a strongly correlated electron material, vanadium dioxide (VO 2) has been a focus of
research since its discovery in 1959, owing to its well-known metal–insulator transition …

We present the development of the first ultrafast transmission electron microscope (UTEM)
driven by localized photoemission from a field emitter cathode. We describe the …

In the last two decades non-equilibrium spectroscopies have evolved from avant-garde
studies to crucial tools for expanding our understanding of the physics of strongly correlated …

The reversible, ultrafast, and multistimuli responsive phase transition of vanadium dioxide
(VO2) makes it an intriguing “smart” material. Its crystallographic transition from the …

Many ultrafast solid phase transitions are treated as chemical reactions that transform the
structures between two different unit cells along a reaction coordinate, but this neglects the …

Strongly correlated electron systems often exhibit very strong interactions between structural
and electronic degrees of freedom that lead to complex and interesting phase diagrams,. For …

Optical phase change materials (O-PCMs) are being explored for a variety of photonic
applications due to the extraordinarily large changes in optical properties that occur during …

Tuning the metal insulator transition (MIT) behavior of VO2 film through the interfacial strain
is effective for practical applications. However, the mechanism for strain-modulated MIT is …

The simultaneous ordering of different degrees of freedom in complex materials undergoing
spontaneous symmetry-breaking transitions often involves intricate couplings that have …