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Published on: June 28, 2018
Echo Trains in Pulsed Electron Spin Resonance of a Strongly Coupled Spin Ensemble
Stefan Weichselbaumer1,2, Matthias Zens3,4, Christoph W Zollitsch1,2
1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany.
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.
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