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. Author manuscript; available in PMC: 2017 Sep 6.
Published in final edited form as: Rev Mod Phys. 2017 Jun 5;89(2):025006. doi: 10.1103/RevModPhys.89.025006

Figure 22.

Figure 22

Different types of spin-torque nano-oscillators. Top: confined geometries with a pillar structure. Bottom: geometries in which current from a point contact excites magnetic dynamics in an unpatterned magnetic free layer.