Scanning Spin Probe Based on Magnonic Vortex Quantum Cavities.

ABSTRACT: Performing nanoscale scanning electron paramagnetic resonance (EPR) requires three essential ingredients: First, a static magnetic field together with field gradients to Zeeman split the electronic energy levels with spatial resolution; second, a radio frequency (rf) magnetic field capable of inducing spin transitions; finally, a sensitive detection method to quantify the energy absorbed by spins. This is usually achieved by combining externally applied magnetic fields with inductive coils or cavities, fluorescent defects, or scanning probes. Here, we theoretically propose the realization of an EPR scanning sensor merging all three characteristics into a single device: the vortex core stabilized in ferromagnetic thin-film discs. On one hand, the vortex ground state generates a significant

SUBMITTER: Gonzalez-Gutierrez CA 

PROVIDER: S-EPMC10867890 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature