169 citations · 991 across the 32 of their papers we have counts for
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Reading Altermagnetic Domains with Photon Drag
Sayed Ali Akbar Ghorashi, Andrew M. Rappe
Finite photon momentum allows second-order photocurrents in centrosymmetric space groups, where the conventional bulk photovoltaic effect is forbidden. Here we study the photon-dra…
Defect-Controlled Multiferroicity via Stacking Control in Nonmagnetic van der Waals Bilayers
Bumseop Kim, Sayed Ali Akbar Ghorashi, Andrew M. Rappe
We present a general paradigm that directly couples vacancy-localized magnetism to interfacial sliding ferroelectricity in nonmagnetic van der Waals (vdWs) bilayers. Utilizing bila…
Multiphoton Fingerprints of Altermagnetic Spin Splittings
Sayed Ali Akbar Ghorashi, Andrew M. Rappe
We systematically investigate multiphoton absorption as a polarization-resolved nonlinear optical probe of planar altermagnets (ALMs). We show that the angular harmonic of the alte…
Bulk-dissociated topological bands without spin-orbit coupling in hetero-dimensional superconducting metamaterials
Joseph J. Cuozzo, Sayed Ali Akbar Ghorashi, Purna P. Paudel +3
Topological superconductors (TSCs) in superconducting hybrid heterostructures, which integrate superconducting and non-superconducting materials, have been intensely investigated w…
Field-unmasked quantum geometry in a symmetry-forbidden photocurrent
Bumseop Kim, Aaron M. Burger, Zhenbang Dai +6
Frequency- and polarization-resolved photocurrents provide a sensitive probe of hidden symmetry and band geometry in quantum materials. Here we study a chiral cubic sillenite whose…