Pufall M R, Rippard W H, Russek S E, Kaka S, Katine J A
Electromagnetics Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA.
Phys Rev Lett. 2006 Aug 25;97(8):087206. doi: 10.1103/PhysRevLett.97.087206. Epub 2006 Aug 23.
We have investigated the interaction mechanism between two nanocontact spin transfer oscillators made on the same magnetic spin valve multilayer. The oscillators phase lock when their precession frequencies are made similar, and a giant magnetoresistance signal is detectable at one contact due to precession at the other. Cutting the magnetic mesa between the contacts with a focused-ion beam modifies the contact outputs, eliminates the phase locking, and strongly attenuates the magnetoresistance coupling, which indicates that spin waves rather than magnetic fields are the primary interaction mechanism.
我们研究了在同一磁性自旋阀多层膜上制作的两个纳米接触自旋转移振荡器之间的相互作用机制。当两个振荡器的进动频率相近时会发生锁相，并且由于另一个振荡器的进动，在一个接触点处可检测到巨磁阻信号。用聚焦离子束切割接触点之间的磁性台面会改变接触点的输出，消除锁相，并强烈衰减磁阻耦合，这表明自旋波而非磁场是主要的相互作用机制。
