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We explore the possibility of exciting spin waves in insulating antiferromagnetic films by injecting spin current at the surface. We analyze both magnetically compensated and uncompensated interfaces. We find that the spin current induced…

Mesoscale and Nanoscale Physics · Physics 2015-10-22 Matthew W. Daniels , Wei Guo , G. Malcolm Stocks , Di Xiao , Jiang Xiao

Antiferromagnets are attractive platforms for the propagation of information via spin waves, offering advantages over ferromagnets in speed of response and immunity to external fields. A recent study of the quasi-2D antiferromagnet CrSBr…

Strongly Correlated Electrons · Physics 2022-12-08 Yue Sun , Joseph Orenstein

We analyze the dynamics of a domain wall in an easy-axis antiferromagnet driven by circularly polarized magnons. Magnons pass through a stationary domain wall without reflection and thus exert no force on it. However, they reverse their…

Strongly Correlated Electrons · Physics 2014-09-10 Se Kwon Kim , Yaroslav Tserkovnyak , Oleg Tchernyshyov

Insulating antiferromagnets are efficient and robust conductors of spin current. To realise the full potential of these materials within spintronics, the outstanding challenges are to demonstrate scalability down to nanometric lengthscales…

Spintronics, since its inception, has mainly focused on ferromagnetic materials for manipulating the spin degree of freedom in addition to the charge degree of freedom, whereas much less attention has been paid to antiferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2021-01-07 H. Y. Yuan , Zhe Yuan , Rembert A. Duine , X. R. Wang

We present a theoretical study on nucleation and propagation of antiferromagnetic skyrmionium induced by spin current injection. A skyrmionium, also known as 2{\pi} skyrmion, is a vortex-like magnetic structure characterized by a…

Materials Science · Physics 2020-08-05 S. A. Obadero , Y. Yamane , C. A. Akosa , G. Tatara

We report on experimental observation of unidirectional propagation of zero-momentum magnons in synthetic antiferromagnet consisting of strained CoFeB/Ru/CoFeB trilayer. Inherent non-reciprocity of spin waves in synthetic antiferromagnets…

We apply the hydrodynamic theory of electron liquid to demonstrate that a circularly polarized radiation induces the diamagnetic, helicity-sensitive dc current in a ballistic nanoring. This current is dramatically enhanced in the vicinity…

Mesoscale and Nanoscale Physics · Physics 2017-01-25 K. L. Koshelev , V. Yu. Kachorovskii , M. Titov , M. S. Shur

Antiferromagnetism couples electron spin to its orbital motion, thus allowing excitation of electron-spin transitions by an ac electric rather than magnetic field - with absorption, exceeding that of common electron spin resonance at least…

Strongly Correlated Electrons · Physics 2009-08-08 Revaz Ramazashvili

In this work, we study the rotating magnetic field driven domain wall (DW) motion in antiferromagnetic nanowires, using the micromagnetic simulations of the classical Heisenberg spin model. We show that in low frequency region, the rotating…

Computational Physics · Physics 2020-01-22 W. H. Li , Z. Y. Chen , D. L. Wen , D. Y. Chen , Z. Fan , M. Zeng , X. B. Lu , X. S. Gao , M. H. Qin

We study a bilayer structure consisting of an antiferromagnetic insulator and a normal metal. An electron current is driven in the normal metal with direction parallel to the interface between the materials. Due to interfacial exchange…

Mesoscale and Nanoscale Physics · Physics 2022-06-01 Eirik Erlandsen , Asle Sudbø

Dynamical topological solitons are studied in classical two-dimensional Heisenberg easy-axis ferromagnets. The properties of such solitons are treated both analytically in the continuum limit and numerically by spin dynamics simulations of…

Strongly Correlated Electrons · Physics 2007-05-23 Denis D. Sheka , Christian Schuster , Boris A. Ivanov , Franz G. Mertens

We study dynamics of antiferromagnets induced by simultaneous application of dc spin current and ac charge current, motivated by the requirement of all-electrically controlled devices in THz gap (0.1-30 THz). We show that ac electric…

Mesoscale and Nanoscale Physics · Physics 2018-10-03 O. Gomonay , T. Jungwirth , J. Sinova

We theoretically investigate the dynamics of solitons in two sublattice antiferromagnets under external perturbations, focusing on the effect of Dzyaloshinsky-Moriya (DM) interactions. To this end, we construct a micromagnetic field theory…

Mesoscale and Nanoscale Physics · Physics 2021-08-18 Sayak Dasgupta , Ji Zou

Antiferromagnets as active elements of spintronics can be faster than their ferromagnetic counterparts and more robust to magnetic noise. Owing to the strongly exchange-coupled magnetic sublattice structure, antiferromagnetic order…

Mesoscale and Nanoscale Physics · Physics 2017-05-31 Olena Gomonay , Vincent Baltz , Arne Brataas , Yaroslav Tserkovnyak

We study the dynamics of spins in the canted antiferromagnetic hematite nanoparticles $\alpha$-Fe$_2$O$_3$. The system includes an antiferromagnetic exchange ($J$) between two sublattices as well as the potential dominated by a uniaxial…

Strongly Correlated Electrons · Physics 2007-05-23 J. D. Lee

We discuss spin-wave transport in anisotropic ferromagnets with an emphasis on the zeroes of the band edges as a function of a magnetic field. An associated divergence of the magnon spin should be observable by enhanced magnon…

Mesoscale and Nanoscale Physics · Physics 2023-04-24 G. E. W. Bauer , P. Tang , M. Elyasi , Y. M. Blanter , B. J. van Wees

We present a theoretical study of the Josephson coupling of two s-wave superconductors which are connected through a diffusive contact consisting of noncollinear ferromagnetic domains. First, we consider a contact with two domains with…

Superconductivity · Physics 2015-05-30 Zahra Shomali , Malek Zareyan , Wolfgang Belzig

1D spin-wave conduits are envisioned as nanoscale components of magnonics-based logic and computing schemes for future generation electronics. `A-la-carte methods of versatile control of the local magnetization dynamics in such nanochannels…

A theoretical proposal for realizing and detecting spin supercurrent in an isotropic antiferromagnetic insulator is reported. Superfluid spin transport is achieved by inserting the antiferromagnet between two metallic reservoirs and…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 So Takei , Bertrand I. Halperin , Amir Yacoby , Yaroslav Tserkovnyak
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