192 citations · 1.2k across the 26 of their papers we have counts for
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Mechanism of electrical switching of ultra-thin CoO/Pt bilayers
Christin Schmitt, Adithya Rajan, Grischa Beneke +9
We study current-induced switching of the Néel vector in CoO/Pt bilayers to understand the underlaying antiferromagnetic switching mechanism. Surprisingly, we find that for ultra-t…
Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial BiYFeO films
Takashi Kikkawa, Koichi Oyanagi, Tomosato Hioki +5
We have investigated hybridized magnon-phonon excitation (magnon polarons) in spin Seebeck effects (SSEs) in BiYFeO (BiYIG; , , and $…
Laser-induced Creation of antiferromagnetic 180-degree domains in NiO/Pt bilayers
Hendrik Meer, Stephan Wust, Christin Schmitt +15
We demonstrate how the antiferromagnetic order in heterostructures of NiO/Pt thin films can be modified by optical pulses. We irradiate our samples with laser light and identify an…
Identifiying the domain wall spin structure in current-induced switching of antiferromagnetic NiO/Pt
Christin Schmitt, Luis Sanchez-Tejerina, Mariia Filianina +9
The understanding of antiferromagnetic domain walls, which are the interface between domains with different Néel order orientations, is a crucial aspect to enable the use of antife…
Thermal spin current generation in the multifunctional ferrimagnet GaFeO
Alberto Anadón, Elodie Martin, Suvidyakumar Homkar +16
In recent years, multifunctional materials have attracted increasing interest for magnetic memories and energy harvesting applications. Magnetic insulating materials are of special…
Indirect optical manipulation of the antiferromagnetic order of insulating NiO by ultrafast interfacial energy transfer
Stephan Wust, Christopher Seibel, Hendrik Meer +14
We report the ultrafast, (sub)picosecond reduction of the antiferromagnetic order of the insulating NiO thin film in a Pt/NiO bilayer. This reduction of the antiferromagnetic order…
Strain-induced Shape Anisotropy in Antiferromagnetic Structures
Hendrik Meer, Olena Gomonay, Christin Schmitt +9
We demonstrate how shape-induced strain can be used to control antiferromagnetic order in NiO/Pt thin films. For rectangular elements patterned along the easy and hard magnetocryst…
Observation of nuclear-spin Seebeck effect
T. Kikkawa, D. Reitz, H. Ito +10
Thermoelectric effects have been applied to power generators and temperature sensors that convert waste heat into electricity. The effects, however, have been limited to electrons…
Direct imaging of current-induced antiferromagnetic switching revealing a pure thermomagnetoelastic switching mechanism
H. Meer, F. Schreiber, C. Schmitt +6
We unravel the origin of current-induced magnetic switching of insulating antiferromagnet/heavy metal systems. We utilize concurrent transport and magneto-optical measurements to i…
Identification of Néel vector orientation in antiferromagnetic domains switched by currents in NiO/Pt thin films
Christin Schmitt, Lorenzo Baldrati, Luis Sanchez-Tejerina +14
Understanding the electrical manipulation of antiferromagnetic order is a crucial aspect to enable the design of antiferromagnetic devices working at THz frequency. Focusing on col…
Magnon polarons in the spin Peltier effect
Reimei Yahiro, Takashi Kikkawa, Rafael Ramos +4
We report the observation of anomalous peak structures induced by hybridized magnon-phonon excitation (magnon polarons) in the magnetic field dependence of the spin Peltier effect…
Absence of evidence of spin transport through amorphous YFeO
Juan M. Gomez-Perez, Koichi Oyanagi, Reimei Yahiro +4
Long-distance transport of spin information in insulators without long-range magnetic order has been recently reported. Here, we perform a complete characterization of amorphous Y$…
Fabrication of yttrium-iron-garnet/Pt multilayers for the longitudinal spin Seebeck effect
Tatsuhiro Nozue, Takashi Kikkawa, Tomoki Watamura +4
For longitudinal spin Seebeck effect (LSSE) devices, a multilayer structure comprising ferromagnetic and nonmagnetic layers is expected to improve their thermoelectric power. In th…
Mechanism of Néel order switching in antiferromagnetic thin films revealed by magnetotransport and direct imaging
Lorenzo Baldrati, Olena Gomonay, Andrew Ross +12
We probe the current-induced magnetic switching of insulating antiferromagnet/heavy metals systems, by electrical spin Hall magnetoresistance measurements and direct imaging, ident…
Interface-induced anomalous Nernst effect in Fe3O4/Pt-based heterostructures
R. Ramos, T. Kikkawa, A. Anadón +8
We have studied the anomalous Nernst effect (ANE) in [Fe3O4/Pt]-based heterostructures, by measuring the ANE-induced electric field with a magnetic field applied normal to the samp…
Spin transport in multilayer systems with fully epitaxial NiO thin films
Lorenzo Baldrati, Christoph Schneider, Tomohiko Niizeki +5
We report on the generation and transport of thermal spin currents in fully epitaxial γ-FeO/NiO(001)/Pt and FeO/NiO(001)/Pt trilayers. A thermal gradient, perpendic…
Full angular dependence of the spin Hall and ordinary magnetoresistance in epitaxial antiferromagnetic NiO(001)/Pt thin films
Lorenzo Baldrati, Andrew Ross, Tomohiko Niizeki +11
We report the observation of the three-dimensional angular dependence of the spin Hall magnetoresistance (SMR) in a bilayer of the epitaxial antiferromagnetic insulator NiO(001) an…
Ferroic collinear multilayer magnon spin valve
Joel Cramer, Felix Fuhrmann, Ulrike Ritzmann +10
Information transport and processing by pure magnonic spin currents in insulators is a promising alternative to conventional charge-current driven spintronic devices. The absence o…
Terahertz spin currents and inverse spin Hall effect in thin-film heterostructures containing complex magnetic compounds
T. Seifert, U. Martens, S. Günther +20
Terahertz emission spectroscopy of ultrathin multilayers of magnetic and heavy metals has recently attracted much interest. This method not only provides fundamental insights into…
Thermoelectric performance of spin Seebeck effect in Fe3O4/Pt-based thin film heterostructures
R. Ramos, A. Anadon, I. Lucas +6
We report a systematic study on the thermoelectric performance of spin Seebeck devices based on Fe3O4/Pt junction systems. We explore two types of device geometries: a spin Hall th…
Observation of huge thermal spin currents in magnetic multilayers
R. Ramos, T. Kikkawa, M. H. Aguirre +11
Thermal spin pumping constitutes a novel mechanism for generation of spin currents; however their weak intensity constitutes a major roadblock for its usefulness. We report a pheno…
Observation of the spin Seebeck effect in epitaxial Fe3O4 thin films
R. Ramos, T. Kikkawa, K. Uchida +8
We report the first experimental observation of the spin Seebeck effect in magnetite thin films. The signal observed at temperatures above the Verwey transition is a contribution f…