Echo Trains in Pulsed Electron Spin Resonance of a Strongly Coupled Spin Ensemble
Abstract
We report on a novel dynamical phenomenon in electron spin resonance experiments of phosphorus donors. When strongly coupling the paramagnetic ensemble to a superconducting lumped element resonator, the coherent exchange between these two subsystems leads to a train of periodic, self-stimulated echoes after a conventional Hahn echo pulse sequence. The presence of these multiecho signatures is explained using a simple model based on spins rotating on the Bloch sphere, backed up by numerical calculations using the inhomogeneous Tavis-Cummings Hamiltonian.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 2020
- DOI:
- 10.1103/PhysRevLett.125.137701
- Bibcode:
- 2020PhRvL.125m7701W