Skyrmion Helicity: Quantization and Quantum Tunneling Effects
arXiv:2205.15155 · doi:10.1103/PhysRevB.106.104422
Abstract
We derive the quantization of magnetic helicity in the solid-state and demonstrate tunable macroscopic quantum tunneling, coherence, and oscillation for a skyrmion spin texture stabilized in frustrated magnets. We also discuss the parameter space for the experimental realization of quantum effects. Typically, for a skyrmion of 5 nm radius, quantum tunneling between two macroscopic states with distinct helicities occurs with an inverse escape rate within seconds below 100 mK, and an energy splitting in the MHz regime. Feasibility of quantum tunneling of an ensemble of magnetic spins inspires new platforms for quantum operations utilizing topologically protected chiral spin configurations.
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References in corpus (46)
- Quantum Computing in the NISQ era and beyond
- Quantum Computing in Molecular Magnets
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Spin current and magneto-electric effect in non-collinear magnets
- Superconducting Qubits: Current State of Play
- Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet
- Multiply periodic states and isolated skyrmions in an anisotropic frustrated magnet
- Entanglement-based single-shot detection of a single magnon with a superconducting qubit
- Skyrmion phase and competing magnetic orders on a breathing kagome lattice
- Electric field driven switching of individual magnetic skyrmions
- Suppression of tunneling by interference in half-integer--spin particles
- Ginzburg-Landau theory for skyrmions in inversion-symmetric magnets with competing interactions
- Dynamics of domain walls in magnetic nanostrips
- Destructive quantum interference in spin tunneling problems
- Physical foundations and basic properties of magnetic skyrmions
- Electric field-induced Skyrmion distortion and giant lattice rotation in the magnetoelectric insulator Cu2OSeO3
- Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization
- Direct Observation of Quantum Coherence in Single-Molecule Magnets
- Bubble and Skyrmion Crystals in Frustrated Magnets with Easy-Axis Anisotropy
- Tunable Quantum Tunneling of Magnetic Domain Walls
- Topological spin crystals by itinerant frustration
- Berry's phase and Quantum Dynamics of Ferromagnetic Solitons
- Extended elliptic skyrmion gratings in epitaxial MnSi thin films
- Magnetic hedgehog lattices in noncentrosymmetric metals
- Quantum skyrmions in frustrated ferromagnets
- Quantum Dynamics of Skyrmions in Chiral Magnets
- Quantum sensing of a coherent single spin excitation in a nuclear ensemble
- Quantum fluctuations stabilize Skyrmion textures
- Single-atom electron paramagnetic resonance in a scanning tunneling microscope driven by a radiofrequency antenna at 4 K
- Controlling the helicity of magnetic skyrmions by electrical field in frustrated magnets
- Quantum Collapse of a Magnetic Skyrmion
- Magnetic Structure and Properties of the S = 5/2 Triangular Antiferromagnet -NaFeO
- Quantum Phase Interference for Quantum Tunneling in Spin Systems
- Macroscopic Quantum Tunneling of Ferromagnetic Domain Walls
- Controlled Creation of Quantum Skyrmions
- Soliton quantization and internal symmetry
- Ferromagnetic resonance with magnetic phase selectivity by means of resonant elastic x-ray scattering on a chiral magnet
- Skyrmion instabilities and distorted spiral states in a frustrated chiral magnet
- Controlled anisotropic dynamics of tightly bound skyrmions in a synthetic ferrimagnet due to skyrmion-deformation mediated by induced uniaxial in-plane anisotropy
- Quantum control of topological defects in magnetic systems
- Quantum Depinning of a Magnetic Skyrmion
- Macroscopic quantum coherence in mesoscopic ferromagnetic systems
- Quantum depinning of the magnetic vortex core in micron-size permalloy disks
- Conserved momenta of ferromagnetic solitons through the prism of differential geometry
- Quantum tunneling of magnetization in dipolar spin-1 condensates under external fields
- Thermally assisted macroscopic quantum tunneling of a ferromagnetic particle in a magnetic field at an arbitrary angle