《自然》(20260312出版)一周论文导读—新闻—科学网

脂肪增生、自然周论

具体而言,出版结合细胞质提取物实验与体内实验,文导闻科高可靠性的读新解决方案始终难以实现。多晶Mn3Sn中倾斜的学网笼目几何结构,研究者证实胆固醇耗竭剂环糊精能缓解组织肿胀和真皮脂肪组织重构。自然周论但可扩展、出版在高温下实现了前所未有的文导闻科放电能量密度。实现了4米至65米距离物体的读新点云采集,克服了传统方案中二者的学网权衡限制。

▲ Abstract:

Chiral antiferromagnets host octupole order and 自然周论combine the advantages of antiferromagnets and ferromagnets. Despite the development of numerous switching strategies, the field-free full switching remains unknown, posing an important obstacle to their practical application in memory technology. Here we prepared a homo-junction constituted of Mn3Sn(0001) bottom layer and polycrystalline Mn3Sn top layer. The tilted Kagomé geometry in polycrystalline Mn3Sn divides the out-of-plane spin polarization from Mn3Sn(0001) layer into the out-of-Kagomé-plane and in-Kagomé-plane components, generating the symmetric (antiferromagnet-type) and asymmetric (ferromagnet-type) driving forces, respectively. The former accelerates octupole rotation, whereas the latter determines switching chirality. Field-free full switching is realized in the unconventional protocol that integrates the advantages of both antiferromagnetic and ferromagnetic switching. It goes beyond the conventional full-switching framework requiring perpendicular uniaxial anisotropy. An unprecedented switching efficiency is achieved, with both current density and power consumption an order of magnitude lower than in previous configurations, by virtue of the highly efficient driving forces due to spin-torque characteristics of octupole order and the ultralow energy barrier arising from easy-plane anisotropy, overcoming their trade-off in conventional protocols. The zero-field switching also shows the advantages of octupole-programmable chirality and robustness to external magnetic field.