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11 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…
Rashba engineering at van der Waals interfaces
Rahul Sharma, Soumya Mukherjee, Fatima Ibrahim +26
Two-dimensional transition metal dichalcogenide (TMD) interfaces offer a versatile platform for studying emergent quantum phenomena and enabling novel device functionalities. When…
Phonon-tunable THz magnonic emission in multiferroic heterostructures
Sylvain Massabeau, Amr Abdelsamie, Florian Godel +13
Collective excitations such as magnons and polar phonons provide natural access to the terahertz (THz) regime, but efficient generation and tunability remain elusive. Multiferroic…
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…
Terahertz time-domain signatures of the inverse Edelstein effect in topological-insulator|ferromagnet heterostructures
Genaro Bierhance, Chihun In, Enzo Rongione +14
Three-dimensional topological insulators possess topologically protected surface states with spin-momentum locking, which enable spin-charge-current interconversion (SCI) by the in…
Large Chiral Orbital Texture and Orbital Edelstein Effect in Co/Al Heterostructure
Sergey A. Nikolaev, Mairbek Chshiev, Fatima Ibrahim +6
Recent experiments by S. Krishnia et al., Nano Lett. 23, 6785 (2023) reported an unprecedentedly large enhancement of torques upon inserting thin Al layer in Co/Pt heterostructure…
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…
ARPES and transport studies of the elemental topological insulator -Sn
Quentin Barbedienne, Julien Varignon, Nicolas Reyren +11
Gray tin, also known as -Sn, can be turned into a three-dimensional topological insulator (3D-TI) by strain and finite size effects. Such room temperature 3D-TI is peculiarly in…
Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
Constance Moreau-Luchaire, Christoforos Moutafis, Nicolas Reyren +13
Facing the ever-growing demand for data storage will most probably require a new paradigm. Nanoscale magnetic skyrmions are anticipated to solve this issue as they are arguably the…
Perpendicular magnetization reversal in Pt/[Co/Ni]/Al multilayers via the Spin Hall Effect of Pt
J. -C. Rojas-Sánchez, P. Laczkowski, J. Sampaio +6
We experimentally investigate the current-induced magnetization reversal in Pt/[Co/Ni]/Al multilayers combining the anomalous Hall effect and magneto-optical Kerr effect techni…
Magnetization reversal by injection and transfer of spin: experiments and theory
A. Fert, V. Cros, J. -M. George +7
Reversing the magnetization of a ferromagnet by spin transfer from a current, rather than by applying a magnetic field, is the central idea of an extensive current research. After…