84 citations · 288 across the 21 of their papers we have counts for
23 papers
Thickness-Dependent Spintronic Terahertz Emission in MBE-Grown PtTe: From Semiconductor to Type-II Dirac Semimetal
Rahul Sharma, Sylvain Massabeau, Armando Pezo +13
Spintronic terahertz (THz) emitters have established themselves as among the most practical broadband THz sources available, yet their performance remains fundamentally limited by…
Unconventional views on orbitronics supported by experimental results
Melissa Yactayo, A. Pezo, J. L. Ampuero +9
Emerging orbitronics assumes long-range orbital current transport, analogous to spin currents. However, recent theory and experiments challenge this view, showing rather local char…
Orbital torque and efficient magnetization switching using ultrathin Co|Al light-metal interfaces: Experiments and modeling
N. Sebe, A. Pezo, S. Krishnia +5
The emergence of the orbital degree of freedom in modern orbitronics offers a promising alternative to heavy metals for the efficient control of magnetization. In this context, ide…
Spin and Orbital Rashba response in ferroelectric polarized PtSe/MoSe/LiNbO heterostructures
Armando Pezo, Sylvain Massabeau, Filip Miljević +6
Recent studies using Terahertz Time-Domain Spectroscopy (THz-TDS) with spintronic emitters as a source have revealed distinct signatures of the Rashba effect. This effect, which ar…
Anatomy of torques from orbital Rashba textures: the case of Co/Al interfaces
A. Pezo, N. Sebe, A. Manchon +2
In the context of orbitronics, the rising of the orbital angular momentum generated at light metal interfaces from orbital textures via orbital Rashba-Edelstein effects nowadays re…
Inverse Rashba-Edelstein THz emission modulation induced by ferroelectricity in CoFeB/PtSe2/MoSe2//LiNbO3 systems
S. Massabeau, O. Paull, A. Pezo +10
Spintronic Terahertz emitters, based on optically triggered spin-to-charge interconversion processes, have recently emerged as novel route towards compact and efficient THz sources…
Spin and Orbital Rashba effects at the Ni/HfO interface
Armando Pezo, Andrés Saul, Aurélien Manchon +1
We predict the giant ferroelectric control of interfacial properties of Ni/HfO2, namely, (i) the magnetocrystalline anisotropy and (ii) the inverse spin and orbital Rashba effects.…
Adiabatic Spin and Orbital Pumping in Metallic Heterostructures
Armando Pezo, Dongwook Go, Yuriy Mokrousov +2
In this study, we investigate the spin and orbital densities induced by magnetization dynamics in a planar bilayer heterostructure. To do this, we employed a theory of adiabatic pu…
Theory of spin and orbital charge conversion at the surface states of Bi_{1-x}Sb_x topological insulator
Armando Pezo, Jean-Marie George, Henri Jaffrès
Topological insulators are quantum materials involving Time-reversal protected surface states(TSS) making them appealing candidates for the design of next generation of highly effi…
Giant and anisotropic enhancement of spin-charge conversion in double Rashba interface graphene-based quantum system
Alberto Anadón, Armando Pezo, Iciar Arnay +8
The ever-increasing demand for efficient data storage and processing has fueled the search for novel memory devices. Spintronics offers an alternative fast and efficient solution u…
Orbital Kerr effect and terahertz detection via the nonlinear Hall effect
Diego Garcia Ovalle, Armando Pezo, Aurélien Manchon
We investigate the optical response induced by a d.c. current flowing in a nonmagnetic material that lacks inversion symmetry. In this class of materials, the flowing current exper…
Orbital diffusion, polarization and swapping in centrosymmetric metals
Xiaobai Ning, A. Pezo, Kyoung-Whan Kim +3
We propose a general theory of charge, spin, and orbital diffusion based on Keldysh formalism. Our findings indicate that the diffusivity of orbital angular momentum in metals is m…
Electronic and spin transport in Bismuthene with magnetic impurities
Armando Pezo, Felipe Crasto de Lima, Adalberto Fazzio
Topological insulators have remained as candidates for future electronic devices since their first experimental realization in the past decade. The existence of topologically prote…
Orbital Pumping by Magnetization Dynamics in Ferromagnets
Dongwook Go, Kazuya Ando, Armando Pezo +3
We show that dynamics of the magnetization in ferromagnets can pump the orbital angular momentum, which we denote by orbital pumping. This is the reciprocal phenomenon to the orbit…
Spin-orbit torque for field-free switching in C_{3v} crystals
Diego García Ovalle, Armando Pezo, Aurélien Manchon
Spin-orbit torques in noncentrosymmetric polycrystalline magnetic heterostructures are usually described in terms of field-like and damping-like torques. However, materials with a…
Electronic transport properties of MoS nanoribbons embedded on butadiene solvent
Armando Pezo, Matheus P. Lima, Marcio Costa +1
Transition metal dichalcogenides (TMDCs) are promising materials for applications in nanoelectronics and correlated fields, where their metallic edge states play a fundamental role…
Orbital Hall physics in two-dimensional Dirac materials
Armando Pezo, Diego García Ovalle, Aurélien Manchon
Orbitronics has recently emerged as a very active research topic after several proposals aiming to exploit the orbital degree of freedom for charge-free electronics. In this commun…
Influence of the surface states on the nonlinear Hall effect in Weyl semimetals
Diego García Ovalle, Armando Pezo, Aurélien Manchon
We investigate the influence of surface states on the nonlinear Hall response of non-centrosymmetric time-reversal invariant Weyl semimetals. To do so, we perform a tomography of t…
Orbital Hall effect in crystals: inter-atomic versus intra-atomic contributions
Armando Pezo, Diego Garcia Ovalle, Aurelien Manchon
The orbital Hall effect (OHE) designates the generation of a charge-neutral flow of orbital angular momentum transverse to an initial charge current. Recent theoretical investigati…
Manipulation of Spin Transport in Graphene/Transition Metal Dichalcogenide Heterobilayers upon Twisting
Armando Pezo, Zeila Zanolli, Nils Wittemeier +4
Proximity effects are one of the pillars of exotic phenomena and technological applications of two dimensional materials. However, the interactions nature depends strongly on the m…
Disorder effects of vacancies on the electronic transport properties of realistic topological insulators nanoribbons: the case of bismuthene
Armando Pezo, Bruno Focassio, Gabriel R. Schleder +3
The robustness of topological materials against disorder and defects is presumed but has not been demonstrated explicitly in realistic systems. In this work, we use state-of-the-ar…
Dual Topological Insulator Device with Disorder Robustness
Bruno Focassio, Gabriel R. Schleder, Armando Pezo +2
Two-dimensional NaBi is a dual topological insulator protected by time-reversal and mirror symmetry, resulting in a promising platform for devices design. However, in reality,…
Braiding of edge states in narrow zigzag graphene nanoribbons: effect of the third neighbors hopping
J. H. Correa, A. Pezo, M. S. Figueira
We study narrow zigzag graphene nanoribbons (ZGNRs), employing density functional theory (DFT) simulations and the tight-binding (TB) method. The main result of these calculations…