59 citations · 163 across the 15 of their papers we have counts for
15 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…
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…
Moiré Collapse and Luttinger Liquids In Twisted Anisotropic Homobilayers
D. J. P. de Sousa, Seungjun Lee, Francisco Guinea +1
We introduce twisted anisotropic homobilayers as a distinct class of moiré systems, characterized by a distinctive ``magic angle", , where both the moiré unit cell and Brillou…
Moiré Kramers-Weyl Fermions from Structural Chirality with Ideal Radial Spin Texture
D. J. P. de Sousa, Seungjun Lee, Tony Low
We demonstrate that two-dimensional Kramers-Weyl fermions can be engineered in spin-orbit coupled twisted bilayers, where the chiral structure of these moiré systems breaks all mir…
Ferroelectric Semimetals with -Bi/SnSe van der Waals heterostructures and its Topological Currents
D. J. P. de Sousa, Seungjun Lee, Qiangsheng Lu +5
We show that proximity effects can be utilized to engineer van der Waals heterostructures (vd- WHs) displaying spin-ferroelectricity locking, where ferroelectricity and spin states…
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…
Field-free-switching state diagram of perpendicular magnetization subjected to conventional and unconventional spin-orbit torques
D. J. P. de Sousa, P. M. Haney, J. P. Wang +1
The lack of certain crystalline symmetries in strong spin-orbit-coupled non-magnetic materials allows for the existence of uncoventional spin Hall responses, with electrically gene…
Spin Torque Generated by Valley Hall Effect in WSe2
D. J. P. de Sousa, M. J. Sammon, Raseong Kim +3
Monolayer transition metal dichalcogenides are promising materials for spintronics due to their robust spin-valley locked valence states, enabling efficient charge-to-spin conversi…
Charge-to-spin conversion in twisted graphene/WSe heterostructures
Seungjun Lee, D. J. P. de Sousa, Young-Kyun Kwon +4
We investigate the twist angle dependence of spin-orbit coupling (SOC) proximity effects and charge-to-spin conversion (CSC) in graphene/WSe heterostructures from first princip…
Current-induced torques in magnetic Weyl semimetal tunnel junctions
D. J. P. de Sousa, Fei Xue, J. P. Wang +2
We study the current-induced torques in asymmetric magnetic tunnel junctions containing a conventional ferromagnet and a magnetic Weyl semimetal contact. The Weyl semimetal hosts c…
Efficient domain wall motion in asymmetric magnetic tunnel junctions with vertical current flow
S. Liu, D. J. P. de Sousa, M. Sammon +2
In this paper, we study the domain wall motion induced by vertical current flow in asymmetric magnetic tunnel junctions. The domain wall motion in the free layer is mainly dictated…
Giant Anomalous Hall Effect due to Double-Degenerate Quasi Flat Bands
Wei Jiang, Duarte J. P. de Sousa, Jian-Ping Wang +1
We propose a novel approach to achieve giant AHE in materials with flat bands (FBs). FBs are accompanied by small electronic bandwidths, which consequently increases the momentum s…
Dirac spectrum in gated multilayer black phosphorus nanoribbons
J. D. S. Forte, D. J. P. de Sousa, J. Milton Pereira
We investigate the effects of a perpendicular electric field applied to multilayer phosphorene nanoribbons with zigzag and armchair edges. Within the context of the tight-binding m…
Boundary conditions for phosphorene nanoribbons in the continuum approach
D. J. P. de Sousa, L. V. de Castro, D. R. da Costa +1
We investigate the energy spectrum of single layer black phosphorene nanoribbons (BPN) by means of a low-energy expansion of a recently proposed tight-binding model that describes…