• Corpus ID: 247446991

Predicting electron spin decoherence with a many-body first-principles approach

@inproceedings{Park2022PredictingES,
  title={Predicting electron spin decoherence with a many-body first-principles approach},
  author={Jinsoo Park and Jin-Jian Zhou and Marco Bernardi},
  year={2022}
}

• Jinsoo Park, Jin-Jian Zhou, M. Bernardi
• Published 12 March 2022
• Physics

Developing a microscopic understanding of spin decoherence is essential to advancing quantum technologies. Electron spin decoherence due to atomic vibrations (phonons) plays a special role as it sets an intrinsic limit to the performance of spin-based quantum devices. Two main sources of phonon-induced spin decoherence – the Elliott-Yafet (EY) and Dyakonov-Perel (DP) mechanisms – have distinct physical origins and theoretical treatments. Here we show calculations that unify their modeling and enable accurate predictions of spin relaxation and precession in semiconductors. We compute the phonon-dressed vertex of the spin-spin correlation function, with a treatment analogous to the calculation of the anomalous electron magnetic moment in QED. We find that the vertex correction provides a giant renormalization of the electron spin dynamics in solids, greater by many orders of magnitude than the corresponding correction in vacuum. Our work demonstrates a general approach for quantitative analysis of spin decoherence in materials, advancing the quest for spin-based quantum technologies.