By exploiting a first-order analogue of the Kibble–Zurek mechanism20,21, we stabilize exotic merons and antimerons (half-skyrmions) and their pairs (bimerons)16,22, which can be erased by magnetic fields and regenerated by temperature cycling. These structures have characteristic sizes of the...
The recent demonstrations of electrical manipulation and detection of antiferromagnetic spins have opened up a new chapter in the story of spintronics. Here, we review the emerging research field that is exploring the links between antiferromagnetic spin
We demonstrate from first principles that ferromagnetic core, meron vortex configurations of the spin-? antiferromagnet in two-dimensions give rise to midgap electronic states in the Mott-Hubbard charge gap. Merons are collective mode excitations of the antiferromagnet and are induced by doping the sy...
Antiferromagnetic Half-skyrmions and Bimerons at room temperatureCondensed Matter - Materials Sciencedoi:10.1038/s41586-021-03219-6A. AriandoChang-Beom EomFrancesco MaccherozziHariom JaniJack HarrisonJheng-Cyuan LinJiahao ChenJonathon SchadPaolo G. Radaelli...
Skyrmions have so far been observed in a variety of magnets that exhibit nearly parallel alignment for neighbouring spins, but theoretically skyrmions with anti-parallel neighbouring spins are also possible. Such antiferromagnetic skyrmions may allow more flexible control than conventional ferromagnetic ...
(SyAF)structures is presented,where the structure can greatly suppress skyrmion Hall effect.In this study,the operations of skyrmion-based half adder,full adder,and XOR logic gate are executed by introducing geometric notches and tilted edges,which can annihilate or diverge skyrmion.Performance of ...
Single-bit full adder and logic gate based on synthetic antiferromagnetic bilayer skyrmionsSkyrmionFull adderSynthetic antiferromagnetLow delay time electronicsMicromagnetsSkyrmion-based devices are promising candidates for non-volatile memory and low-delay time computation. Many skyrmion-based devices execute ...
Observation of topologically stable 2D Skyrmions in an antiferromagnetic spinor Bose-Einstein condensate. Jae-yoon Choi,Woo Jin Kwon,Yong-il Shin. Physical Review . 2012J. Choi, W. J. Kwon, and Y. Shin, "Observation of Topologically Stable 2D Skyrmions in an Antiferro- magnetic Spinor Bose...
SkyrmionsIn this paper we investigate the antiferromagnetic Heisenberg model on the checkerboard lattice by the O(3) O ( 3 ) mathContainer Loading Mathjax Non-linear Sigma Model ( NLSM ). The checkerboard lattice is distinguished from the antiferromagnetic square lattice (with coupling constant J ...
accommodate the right-circular polarization, hence there is simply no freedom in polarization manipulation. This situation is similar to the case of half-metal, which has only one spin spieces25. In other words, ferromagnet is a half-metal for spin wave. To overcome this disadvantage, a ...