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Tailoring nuclear spins order with defects: a Quantum-TCAD study by Calogero, Gaetano; Deretzis, Ioannis; Fisicaro, Giuseppe; Ricciarelli, Damiano; Viglione, Rosario Gaetano; La Magna, Antonino is a scholarly article available to read on EtoBox.

What is Tailoring nuclear spins order with defects: a Quantum-TCAD study about?

The full design of relevant systems for quantum applications, ranging from quantum simulation to sensing, is presented using a combination of atomistic methods. A prototypical system features a two-dimensional ordered distribution of spins interacting with out-of-plane spin drivers/probes. It could be realized in wide-bandgap semiconductors through open-volume point defects and functionalized surfaces with low Miller indexes. We study the case of defect electron spins (driver / probe) interacting via hyperfine coupling with $S=1/2$ nuclear spins of H atoms chemisorbed onto \hkl(001) and \hkl(111) 3C-SiC surfaces. We simulate the system fabrication processes with super lattice kinetic Monte Carlo, demonstrating that epitaxial growth under time-dependent conditions is a viable method for achieving controlled abundance or depletion of near-surface point defects. Quantum features are evaluated by means of extensive numerical analysis at a full quantum mechanical level based on calibrated models of interacting spin systems. This analysis includes both stationary (relative stability of ordered states) and time-dependent (protocols) conditions, achieved varying the model parameters (in ou

Author

Calogero, Gaetano; Deretzis, Ioannis; Fisicaro, Giuseppe; Ricciarelli, Damiano; Viglione, Rosario Gaetano; La Magna, Antonino

Published

2025

Language

EN