8 papers
Tunable Skyrmions in a Topological Wigner Crystal
David A. Dahlbom, Daniel Kaplan, Premala Chandra +1
In low density systems with strong interactions electrons are expected to crystallize into a Wigner solid. Recently, advances in two-dimensional systems where electrons carry Berry…
Probing the Nature of Interstitial Anionic Electrons in 2D Electride CaN via Landau-Level Spectroscopy
Arjyama Bordoloi, Daniel Kaplan, Sobhit Singh
We investigate the magnetic-field response of interstitial anionic electrons (IAEs) in two-dimensional electrides, using monolayer CaN as a prototypical system. By computing th…
Relaxation-driven topological domains in moiré materials
Arjyama Bordoloi, Daniel Kaplan, Sobhit Singh
Spatial control of topology is highly desirable for realizing tunable quantum functionalities in materials. Moiré superlattices formed by twisting van der Waals heterostructures p…
Near-degenerate competing magnetic orders in EuAgAs: a tunable route to altermagnetism
Mohamed El Gazzah, Daniel Kaplan, Zachary Morgan +5
Altermagnets (AMs) have recently emerged as a distinct magnetic class bridging central features of ferromagnets (FMs) and antiferromagnets (AFMs), offering new opportunities for sp…
Valley polarization of chiral excitonic bound states induced by band geometry
Archisman Panigrahi, Daniel Kaplan
Van der Waals (vdW) materials provide a rich platform for exploring the interplay of interactions, topology, and paired-electron phases. We study how the Berry phase reshapes excit…
Optically-Induced Faraday-Goldstone Waves
Daniel Kaplan, Pavel A. Volkov, Andrea Cavalleri +1
Faraday waves, typically observed in driven fluids, result from the confluence of nonlinearity and parametric amplification. Here we show that optical pulses can generate analogous…