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 1303.7148cond-mat.mes-hall
收藏

纳米尺度上的自旋波模共存:奥斯特场诱导的非对称能量景观的结果

Spin wave mode coexistence on the nano-scale: A consequence of the Oersted field induced asymmetric energy landscape

Randy K. Dumas, Ezio Iacocca, Stefano Bonetti, Sohrab Sani, Majid Mohseni, Anders Eklund, Johan Persson, Olle Heinonen, Johan Åkerman

摘要:

有人认为,如果多个自旋波模式竞争同一个位于中心的能量源,如在纳米接触自旋扭矩振荡器,只有一个模式应该在稳定状态下生存。在这里,模式共存所需的实验条件进行了探索。模式共存是由空间不均匀的奥斯特场,这导致物理分离的模式,并进一步促进自旋波本地化在减少施加的场角引起的局部场不对称。最后,仿真和实验都揭示了低频信号与两个共存模式的互调一致。

英文摘要:

It has been argued that if multiple spin wave modes are competing for the same centrally located energy source, as in a nanocontact spin torque oscillator, that only one mode should survive in the steady state. Here, the experimental conditions necessary for mode coexistence are explored. Mode coexistence is facilitated by the local field asymmetries induced by the spatially inhomogeneous Oersted field, which leads to a physical separation of the modes, and is further promoted by spin wave localization at reduced applied field angles. Finally, both simulation and experiment reveal a low frequency signal consistent with the intermodulation of two coexistent modes.

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。

↑