Magnetic resonance imaging of spin-wave transport and interference in a magnetic insulator.

ABSTRACT: Spin waves-the elementary excitations of magnetic materials-are prime candidate signal carriers for low-dissipation information processing. Being able to image coherent spin-wave transport is crucial for developing interference-based spin-wave devices. We introduce magnetic resonance imaging of the microwave magnetic stray fields that are generated by spin waves as a new approach for imaging coherent spin-wave transport. We realize this approach using a dense layer of electronic sensor spins in a diamond chip, which combines the ability to detect small magnetic fields with a sensitivity to their polarization. Focusing on a thin-film magnetic insulator, we quantify spin-wave amplitudes, visualize spin-wave dispersion and interference, and demonstrate time-domain measurements of spin-wave pa

SUBMITTER: Bertelli I 

PROVIDER: S-EPMC7673737 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature