Direct Observation of Large Amplitude Spin Excitations Localized in a Spin-Transfer Nanocontact

Abstract

We report the direct observation of large amplitude spin-excitations localized in a spin-transfer nanocontact using scanning transmission x-ray microscopy. Experiments were conducted using a nanocontact to an ultrathin ferromagnetic multilayer with perpendicular magnetic anisotropy. Element resolved x-ray magnetic circular dichroism images show an abrupt onset of spin excitations at a threshold current that are localized beneath the nanocontact, with average spin precession cone angles of 25° at the contact center. The results strongly suggest that we have observed a localized magnetic soliton.

5 pages, 3 figures

References in corpus (4)

• Theory for a dissipative droplet soliton excited by a spin torque nanocontact
• Stable Magnetic Droplet Solitons in Spin Transfer Nanocontacts
• Direct observation and imaging of a spin-wave soliton with $p-$like symmetry
• Observation of droplet soliton drift resonances in a spin-transfer-torque nanocontact to a ferromagnetic thin film

Cited by in corpus (25)

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• Stable solitons in a nearly PT-symmetric ferromagnet with spin-transfer torque
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