Quantum Collapse of a Magnetic Skyrmion
arXiv:1806.03675 · doi:10.1103/PhysRevB.98.024423
Abstract
Quantum collapse of a small skyrmion in a thin magnetic film with Dzyalishinskii-Moriya (DMI) interaction has been studied. The energy of the skyrmion and the stability threshold determined by the DMI, the external magnetic field, and the underlying atomic lattice are investigated analytically and numerically. The Lagrangian describing the coupled dynamics of the skyrmion size and the chirality angle is derived. Equations of motion possess an instanton solution that corresponds to the skyrmion underbarrier contraction via quantum tunneling with subsequent collapse and decay of the topological charge. The tunneling rate is computed and the conditions needed to observe quantum collapse of a skyrmion in a magnetic film are discussed.
References in corpus (16)
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Multiply periodic states and isolated skyrmions in an anisotropic frustrated magnet
- Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites
- Skyrmions in Magnetic Multilayers
- The properties of isolated chiral skyrmions in thin magnetic films
- Ginzburg-Landau theory for skyrmions in inversion-symmetric magnets with competing interactions
- Inertia and chiral edge modes of a skyrmion magnetic bubble
- Giant Skyrmions Stabilized by Dipole-Dipole Interactions in Thin Ferromagnetic Films
- The Magnus Force on Skyrmions in Ferromagnets and the Quantum Hall Effect
- Skyrmion in a real magnetic film
- Quantum fluctuations stabilize Skyrmion textures
- Random Field XY Model in Three Dimensions
- Collapse of Skyrmions in 2d Ferro- and Antiferromagnets
- Topological solitons in highly anisotropic two dimensional ferromagnets
- Stable topological textures in a classical 2D Heisenberg model
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