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Towards tunable graphene phononic crystals
Yuefeng Yu, Jan N. Kirchhof, Aleksei Tsarapkin +5
Phononic crystals (PnCs) are artificially patterned media exhibiting bands of allowed and forbidden zones for phonons. Many emerging applications of PnCs from solid-state simulator…
Probing the formation of dark interlayer excitons via ultrafast photocurrent
Denis Yagodkin, Elias Ankerhold, Abhijeet Kumar +5
Optically dark excitons determine a wide range of properties of photoexcited semiconductors yet are hard to access via conventional spectroscopies. Here, we develop a time-resolved…
Observation of tunable discrete time crystalline phases
Arnab Sarkar, Anurag, Javed A. Mondal +7
Discrete time crystals (DTCs) are emergent non-equilibrium phases of periodically driven many-body systems, with potential applications ranging from quantum computing to sensing an…
Nanomechanical absorption spectroscopy of 2D materials with femtowatt sensitivity
Jan N. Kirchhof, Yuefeng Yu, Denis Yagodkin +9
Nanomechanical spectroscopy (NMS) is a recently developed approach to determine optical absorption spectra of nanoscale materials via mechanical measurements. It is based on measur…
Impact of dark excitons on Förster type resonant energy transfer between dye molecules and atomically thin semiconductors
Manuel Katzer, Sviatoslav Kovalchuk, Kyrylo Greben +3
Interfaces of dye molecules and two-dimensional transition metal dichalcogenides (TMDCs) combine strong molecular dipole excitations with high carrier mobilities in semiconductors.…