arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1303.4491cond-mat.str-el
收藏

多铁性手征晶格磁体中Skyrmion晶体的磁电共振和微波二极管效应

Magnetoelectric Resonances and Predicted Microwave Diode Effect of Skyrmion Crystal in Multiferroic Chiral-Lattice Magnet

Masahito Mochizuki, Shinichiro Seki

摘要:

我们从理论上发现,在多铁性手征晶格磁体Cu_2 O_SeO_3中,Skyrmion晶体(SkX)的独特本征模不仅对交流磁场(H^w)是磁激活的,而且对交流电场(E^w)也是电激活的,它放大了E^w与自旋织构之间的动态磁电耦合.在它们的电和磁激活过程之间产生的强烈干扰可以导致对微波的空前大的二极管效应,即,当入射方向反转时,SkX的吸收变化高达~20%。我们的研究结果表明,skyrmion可以是一个有前途的微波器件的积木。

英文摘要:

We theoretically discover that unique eigenmodes of skyrmion crystal (SkX) are not only magnetically active to ac magnetic field (H^w) but also electrically active to ac electric field (E^w) in a multiferroic chiral-lattice magnet Cu2OSeO3, which amplifies the dynamical magnetoelectric coupling between E^w and the spin texture. The resulting intense interference between their electric and magnetic activation processes can lead to unprecedentedly large diode effect on the microwave, i.e., its absorption by SkX changes up to ~20% when the incident direction is reversed. Our results demonstrate that the skyrmion can be a promising building block for microwave devices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑