Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators
Holographic Magnetic Imaging of Single-Layer Nanocontact Spin-Transfer Oscillators
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DOI：
10.1109/tmag.2016.2528959
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发表时间：
2016-07-01
影响因子：
2.1
通讯作者：
Ogrin, Feodor Y.
中科院分区：
文献类型：
--
作者：
Parra, Erick O. Burgos;Bukin, Nick;Ogrin, Feodor Y.
利用自相关线性微分算子技术，用扩展参考全息术获得了单层自旋转移振子内磁化强度的时间平均图像。在具有100 nm直径的纳米接触的Pd（5）-Cu（20）-Ni 81 Fe 19（7）-Cu（2）-Pd（2）（以纳米计）堆叠上的输运测量揭示了涡旋动力学的存在。对于24和-24 mA的注入电流值的器件的磁性图像表明，涡旋已经从纳米接触喷射出并且被钉扎在通过Au掩模可见的区域的边缘处。
Time-averaged images of the magnetization within single-layer spin-transfer oscillators have been obtained using the holography with extended reference by autocorrelation linear differential operator technique. Transport measurements on a Pd(5)-Cu(20)-Ni81Fe19(7)-Cu(2)-Pd(2) (in nanometers) stack with a 100 nm diameter nanocontact reveal the presence of vortex dynamics. Magnetic images of the device for injected current values of 24 and -24 mA suggest that a vortex has been ejected from the nanocontact and become pinned at the edge of the region that is visible through the Au mask.