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30 papers · 2 filters
Delamination-assisted ultrafast wrinkle formation in a freestanding film
Yifan Su, Alfred Zong, Anshul Kogar +6
The ability to synthesize and control two-dimensional (2D) crystals creates numerous opportunities for studying emergent states of matter and their novel functionalities. Freestand…
Influence of local symmetry on lattice dynamics coupled to topological surface states
Jonathan A. Sobota, Samuel W. Teitelbaum, Yijing Huang +18
We investigate coupled electron-lattice dynamics in the topological insulator Bi2Te3 with time-resolved photoemission and time-resolved x-ray diffraction. It is well established th…
Exciton lifetime and optical linewidth profile via exciton-phonon interactions: Theory and first-principles calculations for monolayer MoS
Y. -H. Chan, Jonah B. Haber, Mit H. Naik +4
Exciton dynamics dictate the evolution of photoexcited carriers in photovoltaic and optoelectronic devices. However, interpreting their experimental signatures is a challenging the…
Automating Dislocation Characterization in 3D Dark Field X-ray Microscopy
Pin-Hua Huang, Ryan Coffee, Leora Dresselhaus-Marais
Mechanical properties in crystals are strongly correlated to the arrangement of 1D line defects, termed dislocations. Recently, Dark field X-ray Microscopy (DFXM) has emerged as a…
Floquet engineering of strongly-driven excitons in monolayer tungsten disulfide
Yuki Kobayashi, Christian Heide, Amalya C. Johnson +4
Interactions of quantum materials with strong-laser fields can induce exotic nonequilibrium electronic states. Monolayer transition-metal dichalcogenides, a new class of direct-gap…
Quantifying the performance of machine learning models in materials discovery
Christopher K. H. Borg, Eric S. Muckley, Clara Nyby +4
The predictive capabilities of machine learning (ML) models used in materials discovery are typically measured using simple statistics such as the root-mean-square error (RMSE) or…