253 citations · 1.2k across the 20 of their papers we have counts for
22 papers
Atomic-Scale Detection of Néel Vector Switching in the Single-Layer A-type Antiferromagnet Cr2S3-2D
Affan Safeer, Calisa Dias, Mahdi Ghorbani-Asl +9
The detection of Néel vector switching in a single-layer A-type antiferromagnet marks an important step toward functional two-dimensional spintronics. Here, CrS-2D, grown o…
A molecular-spin photovoltaic device
Xiangnan Sun, Saül Vélez, Ainhoa Atxabal +6
We fabricated a C60-based molecular spin photovoltaic device that integrated a photovoltaic response with the spin transport across the molecular layer. The photovoltaic response c…
Terahertz third-harmonic generation of lightwave driven Weyl fermions far from equilibrium
Patrick Pilch, Changqing Zhu, Sergey Kovalev +4
We report on time-resolved ultrafast terahertz third-harmonic generation spectroscopy of nonequilibrium dynamics of Weyl fermions in a nanometer thin film of the Weyl semimetal TaP…
Broad-band THz emission by Spin-to-Charge Conversion in Topological Material -- Ferromagnet Heterostructures
Xingyue Han, Xiong Yao, Tilak Ram Thapaliya +10
Terahertz spintronic devices combine ultrafast operation with low power consumption, making them strong candidates for next-generation memory technologies. In this study, we use ti…
Population inversion and ultrafast terahertz nonlinearity of transient Dirac fermions in CdAs
Changqing Zhu, Patrick Pilch, Renato M. A. Dantas +7
Harmonic generation provides an efficient tool for the study of ultrafast nonlinear dynamics. We report on time-resolved optical-pump terahertz-harmonic-generation spectroscopic in…
Self-intercalation as origin of high-temperature ferromagnetism in epitaxially grown Fe5GeTe2 thin films
M. Silinskas, S. Senz, P. Gargiani +8
The role of self-intercalation in 2D van der Waals materials is key to the understanding of many of their properties. Here we show that the magnetic ordering temperature of thin fi…
Terahertz spin-to-charge current conversion in stacks of ferromagnets and the transition-metal dichalcogenide NbSe
Lukáš Nádvorník, Oliver Gueckstock, Lukas Braun +16
Transition-metal dichalcogenides (TMDCs) are an aspiring class of materials with unique electronic and optical properties and potential applications in spin-based electronics. Here…
Intrinsic 2D-XY ferromagnetism in a van der Waals monolayer
Amilcar Bedoya-Pinto, Jing-Rong Ji, Avanindra Pandeya +6
Long before the recent fascination with two-dimensional materials, the critical behaviour and universality scaling of phase transitions in low-dimensional systems has been a topic…
Doping-induced spin Hall ratio enhancement in A15-phase, Ta-doped Beta-W thin films
Mohsin Z. Minhas, Avanindra K. Pandeya, Bharat Grover +7
As spintronic devices become more and more prevalent, the desire to find Pt free materials with large spin Hall effects is increasing. Previously it was shown that Beta W, the meta…
Towards Weyltronics: Realization of epitaxial NbP and TaP Weyl Semimetal thin films
Amilcar Bedoya-Pinto, Avanindra Kumar Pandeya, Defa Liu +7
Weyl Semimetals (WSMs), a recently discovered topological state of matter, exhibit an electronic structure governed by linear band dispersions and degeneracy (Weyl) points leading…
11,11,12,12-tetracyanonaphtho-2,6-quinodimethane in Contact with Ferromagnetic Electrodes for Organic Spintronics
Shengwei Shi, Zhengyi Sun, Xianjie Liu +8
Spinterface engineering has shown quite important roles in organic spintronics as it can improve spin injection or extraction. In this study, 11,11,12,12-tetracyanonaptho-2,6-quino…
Competing effects at Pt/YIG interfaces: spin Hall magnetoresistance, magnon excitations and magnetic frustration
Saül Vélez, Amilcar Bedoya-Pinto, Wenjing Yan +2
We study the spin Hall magnetoresistance (SMR) and the magnon spin transport (MST) in Pt/Y3Fe5O12(YIG)-based devices with intentionally modified interfaces. Our measurements show t…
Frequency driven inversion of tunnel magnetoimpedance in magnetic tunnel junctions
Subir Parui, Mário Ribeiro, Ainhoa Atxabal +5
Magnetic tunnel junctions (MTJs) are basic building blocks for devices such as magnetic random access memories (MRAMs). The relevance for modern computation of non-volatile high-fr…
Reliable determination of the Cu/n-Si Schottky barrier height by using in-device hot-electron spectroscopy
Subir Parui, Ainhoa Atxabal, Mário Ribeiro +5
We show the operation of a Cu/Al_2O_3/Cu/n-Si hot-electron transistor for the straightforward determination of a metal/semiconductor energy barrier height even at temperatures belo…
Spin Hall magnetoresistance as a probe for surface magnetization in Pt/CoFeO bilayers
Miren Isasa, Saül Vélez, Edurne Sagasta +6
We study the spin Hall magnetoresistance (SMR) in Pt grown on CoFeO (CFO) ferrimagnetic insulating (FMI) films. A careful analysis of the angle-dependent…
Absence of magnetic proximity effects in magnetoresistive Pt/CoFe2O4 hybrid interfaces
M. Valvidares, N. Dix, M. Isasa +10
Ultra-thin Pt films grown on insulating ferrimagnetic CoFe2O4 (111) epitaxial films display a magnetoresistance upon rotating the magnetization of the magnetic layer. We report her…
Hanle Magnetoresistance in Thin Metal Films with Strong Spin-Orbit Coupling
Saül Vélez, Vitaly N. Golovach, Amilcar Bedoya-Pinto +7
We report measurements of a new type of magnetoresistance in Pt and Ta thin films. The spin accumulation created at the surfaces of the film by the spin Hall effect decreases in a…
Modulation of pure spin currents with a ferromagnetic insulator
Estitxu Villamor, Miren Isasa, Saül Vélez +5
We propose and demonstrate spin manipulation by magnetically controlled modulation of pure spin currents in cobalt/copper lateral spin valves, fabricated on top of the magnetic ins…
Hybrid Interface States and Spin Polarization at Ferromagnetic Metal-Organic Heterojunctions: Interface Engineering for Efficient Spin Injection in Organic Spintronics
Shengwei Shi, Zhengyi Sun, Amilcar Bedoya-Pinto +7
Ferromagnetic metal-organic semiconductor (FM-OSC) hybrid interfaces have shown to play an important role for spin injection in organic spintronics. Here, 11,11,12,12-tetracyanonap…
Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects
Miren Isasa, Amilcar Bedoya-Pinto, Saül Vélez +5
We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe2O4 (CFO) ferrimagnetic insulating films. The results can be described in terms of t…
How reliable are Hanle measurements in metals in a three-terminal geometry?
Oihana Txoperena, Marco Gobbi, Amilcar Bedoya-Pinto +4
We test the validity of Hanle measurements in three-terminal devices by using aluminum (Al) and gold (Au). The obtained Hanle and inverted Hanle-like curves show an anomalous behav…
Tracking defect-induced ferromagnetism in GaN:Gd
Martin Roever, Joerg Malindretos, Amilcar Bedoya-Pinto +3
We report on the magnetic properties of GaN:Gd layers grown by molecular beam epitaxy (MBE). A poor reproducibility with respect to the magnetic properties is found in these sample…