12 citations · 20 across the 8 of their papers we have counts for
8 papers
Symmetry-isolated magnetoelectric electro-optic effects in noncentrosymmetric metals
C. O. Ascencio, D. J. P. de Sousa, Seungjun Lee +1
We classify the symmetry-constrained forms of the Berry curvature dipole , gyrotropic magnetic tensor , and magnetoelectric electro-optic (EO) tensor $\math…
Metallic electro-optic effects in topological chiral crystals
C. O. Ascencio, D. J. P. de Sousa, Tony Low
Topological chiral crystals have emerged as a fertile material platform for investigating optical phenomena derived from the distinctive Fermi surface Berry curvature and orbital m…
Optical Gain Through Metallic Electro-Optical Effects
N. Roldan-Levchenko, D. J. P. de Sousa, C. O. Ascencio +3
Optical gain is a critical process in today's semiconductor technology and it is most often achieved via stimulated emission. In this theoretical study, we find a resonant TE mode…
Metallic Electro-Optic Effect in Twisted Double-Bilayer Graphene
D. J. P. de Sousa, N. Roldan-Levchenko, C. O. Ascencio +3
Recent theoretical advances have highlighted the role of Bloch state intrinsic properties in enabling unconventional electro-optic (EO) phenomena in bulk metals, offering novel str…
Linear Magnetoelectric Electro-Optic Effect
D. J. P. de Sousa, C. O. Ascencio, Tony Low
In this work, we derive a generalized constitutive relation describing the current response to external electromagnetic fields in electrically biased quantum materials. While our s…
Enhanced Spin Hall Response From Aligned Kramers-Weyl Points in High Chern Number Semimetals
C. O. Ascencio, Wei Jiang, D. J. P. de Sousa +3
We propose a spin Hall effect (SHE) enhancement mechanism due to Kramers-Weyl point (KWP) alignment in chiral topological semimetals with high Chern numbers (CNs). Through model Ha…
Gigantic tunneling magnetoresistance in magnetic Weyl semimetal tunnel junctions
D. J. P. de Sousa, C. O. Ascencio, P. M. Haney +2
We investigate the tunneling magnetoresistance in magnetic tunnel junctions (MTJs) comprised of Weyl semimetal contacts. We show that chirality-magnetization locking leads to a gig…
Design and construction of a point-contact spectroscopy rig with lateral scanning capability
M. Tortello, W. K. Park, C. O. Ascencio +2
The design and realization of a cryogenic rig for point-contact spectroscopy measurements in the needle-anvil configuration is presented. Thanks to the use of two piezoelectric nan…