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Motivated by recent experimental work, we consider spin transport between a normal metal and a gapped quantum paramagnet. We model the latter as the magnonic Mott-insulating phase of an easy-plane ferromagnetic insulator. We evaluate the…

Mesoscale and Nanoscale Physics · Physics 2019-09-27 Camilo Ulloa , R. A. Duine

Colossal magnetoresistance (CMR) has been observed across many Eu$^{2+}$-based materials; however, its origin is not completely understood. Here we investigate the antiferromagnetic insulator EuZn$_2$P$_2$ through single crystal x-ray…

In bilayers consisting of a normal metal (N) with spin-orbit coupling and a ferromagnet (F), the combination of the spin-Hall effect, the spin-transfer torque, and the inverse spin-Hall effect gives a small correction to the in-plane…

Mesoscale and Nanoscale Physics · Physics 2021-07-15 David A. Reiss , Tobias Kampfrath , Piet W. Brouwer

We report chirality-induced current-in-plane magnetoresistance (CIP-MR) in chiral molecule/ferromagnetic metal bilayer at room temperature. The previously reported chiralityinduced current-perpendicular-to-plane magnetoresistance (CPP-MR)…

We propose and analyze a mechanism for inducing spin Hall currents in ordinary (1H phase) monolayer transition metal dichalcogenides (TMDs) due to the nonlinear process of optical rectification. The photo-induced spin current is…

Mesoscale and Nanoscale Physics · Physics 2018-12-07 Alireza Taghizadeh , T. G. Pedersen

We report giant magnetoresistance up to 150 percent at low bias current and low temperature as well as room temperature magnetoresistance in polymeric spin-valves having the structure LSMO/conjugated polymer/Co. The conjugated polymers,…

Materials Science · Physics 2016-08-31 Sayani Majumdar , Himadri S. Majumdar , Reino Laiho , Ronald Osterbacka

The dc voltage generated under ferromagnetic resonance has been studied in bilayer structures based on manganite thin epitaxial films La0.67Sr0.33MnO3 (LSMO) and non-magnetic metals (Au, Pt, and SrRuO3) in the temperature range up to the…

Mesoscale and Nanoscale Physics · Physics 2015-11-30 V. A. Atsarkin , B. V. Sorokin , I. V. Borisenko , V. V. Demidov , G. A. Ovsyannikov

The temperature and voltage dependence of spin transport is theoretically investigated in a new type of magnetic tunnel junction, which consists of two ferromagnetic outer electrodes separated by a ferromagnetic barrier and a nonmagnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Ali A. Shokri , Alireza Saffarzadeh

We present a systematic study of the temperature dependence of diffusive magnon spin transport, using a non-local device geometry. In our measurements, we detect spin signals arising from electrical and thermal magnon generation, and we…

Mesoscale and Nanoscale Physics · Physics 2016-11-09 Ludo J. Cornelissen , Bart J. van Wees

A conducting cylinder with a uniform magnetic field along its axis and radial temperature gradient is considered at the stationary state. At large temperature gradients the azimuthal Hall electrical current creates the axial magnetic field…

High Energy Astrophysical Phenomena · Physics 2025-12-22 G. S. Bisnovatyi-Kogan , M. V. Glushikhina

Chiral magnets support topological skyrmion textures due to the Dzyaloshinskii-Moriya spin-orbit interaction. In the presence of a sufficiently large applied magnetic field, such skyrmions are large amplitude excitations of the…

Strongly Correlated Electrons · Physics 2014-11-12 Christoph Schütte , Markus Garst

Next-generation spintronic applications require material properties that can be hardly met by one material candidate. Here we demonstrate that by combining insulating and metallic magnets, enhanced spin-charge conversion and…

We study deterministic magnetic reversal of a perpendicularly magnetized Co layer in a Co/MgO/Ta nano-square driven by spin Hall torque from an in-plane current flowing in an underlying Pt layer. The rate-limiting step of the switching…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 O. J. Lee , L. Q. Liu , C. F. Pai , H. W. Tseng , Y. Li , D. C. Ralph , R. A. Buhrman

We investigate the spin Hall magnetoresistance in thin film bilayer heterostructures of the heavy metal Pt and the antiferromagnetic insulator NiO. While rotating an external magnetic field in the easy plane of NiO, we record the…

Exploring novel strategies to manipulate the order parameter of magnetic materials by electrical means is of great importance, not only for advancing our understanding of fundamental magnetism, but also for unlocking potential practical…

Applied Physics · Physics 2024-03-04 L. Chen , Y. Sun , S. Mankovsky , T. N. G. Meier , M. Kronseder , H. Ebert , D. Weiss , C. H. Back

We report very efficient spin current generation by the spin Hall effect in the alloy Au0.25Pt0.75, which, as determined by two different direct spin-orbit torque measurements, exhibits a giant internal spin Hall ratio of > 0.58…

Mesoscale and Nanoscale Physics · Physics 2018-09-12 Lijun Zhu , Daniel. C. Ralph , Robert A. Buhrman

Large linear magnetoresistance (MR) in electron-injected p-type silicon at very low magnetic field is observed experimentally at room temperature. The large linear MR is induced in electron-dominated space-charge transport regime, where the…

Materials Science · Physics 2013-06-05 Michael P. Delmo , Eiji Shikoh , Teruya Shinjo , Masashi Shiraishi

The spin-orbit interaction in heavy metal/ferromagnet/oxide structures has been extensively investigated because it can be employed in manipulation of the magnetization direction by in-plane current. This implies the existence of an inverse…

Materials Science · Physics 2015-05-06 Soonha Cho , Seung-heon Chris Baek , Younghun Jo , Byong-Guk Park

Spin waves in magnetic films are affected by the vicinity to a superconductor. Here we focus on a bilayer stack made of an insulating Yttrium Iron Garnet (YIG) film and a high-$T_c$ YBCO superconducting planar resonator and report microwave…

Superconductivity · Physics 2024-07-15 Alberto Ghirri , Claudio Bonizzoni , Maksut Maksutoglu , Marco Affronte

Spin Hall effects intermix spin and charge currents even in nonmagnetic materials and, therefore, ultimately may allow the use of spin transport without the need for ferromagnets. We show how spin Hall effects can be quantified by…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 O. Mosendz , J. E. Pearson , F. Y. Fradin , G. E. W. Bauer , S. D. Bader , A. Hoffmann