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31 papers
Multi-scale time-resolved electron diffraction: A case study in moiré materials
C. J. R. Duncan, M. Kaemingk, W. H. Li +16
Ultrafast-optical-pump -- structural-probe measurements, including ultrafast electron and x-ray scattering, provide direct experimental access to the fundamental timescales of atom…
Magnetic and electronic ordering phenomena in the [RuO] honeycomb lattice compound AgRuO
Walter Schnelle, Beluvalli E. Prasad, Claudia Felser +13
The silver ruthenium oxide AgRuO consists of honeycomb [RuO] layers, and can be considered an analogue of SrRuO with a different intercalation stage.…
Pressure-induced 1T to 3R structural phase transition in metallic VSe2: X-ray diffraction and first-principles theory
Srishti Pal, Koyendrila Debnath, Satyendra Nath Gupta +4
We study pressure-induced structural evolution of vanadium diselenide (VSe2), a 1T polymorphic member of the transition metal di-chalcogenide (TMD) family using synchrotron-based p…
Motile dissenters disrupt the flocking of active granular matter
Pradip K. Bera, A. K. Sood
We report flocking in the dry active granular matter of millimeter-sized two-step-tapered rods without an intervening medium. The system undergoes the flocking phase transition at…
Phases and excitations of active rod-bead mixtures: simulations and experiments
Harsh Soni, Nitin Kumar, Jyothishraj Nambisan +3
We present a large-scale numerical study, supplemented by experimental observations, of a quasi-two-dimensional active system of polar rods and spherical beads confined between two…
Trapping and sorting active particles: motility-induced condensation & smectic defects
Nitin Kumar, Rahul Kumar Gupta, Harsh Soni +2
We present an experimental realization of the collective trapping phase transition [Kaiser et al., PRL 108, 268307 (2012)], using motile polar granular rods in the presence of a V-…