Electron spin relaxation in graphene: The role of the substrate

By C. Ertler, S. Konschuh, M. Gmitra, Jaroslav Fabian. 2009

184 citations recorded by the source corpus.

Theory of the electron spin relaxation in graphene on the SiO$_2$ substrate is developed. Charged impurities and polar optical surface phonons in the substrate induce an effective random Bychkov-Rashba-like spin-orbit coupling field which leads to spin relaxation by the D'yakonov-Perel' mechanism. Analytical estimates and Monte Carlo simulations show that the corresponding spin relaxation times are between micro- to milliseconds, being only weakly temperature dependent. It is also argued that the presence of adatoms on graphene can lead to spin lifetimes shorter than nanoseconds.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/b98760b3086ab4b3b627fcf16445b236d809c2ce

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Colloquium : Spintronics in graphene and other two-dimensional materials (2019, background): “(14) The term in parentheses must be interpreted as the effective Larmor frequency associated with a Bychkov-Rashba coupling generated by, e.g. the interaction with the substrate (Ertler et al., 2009).”
Spintronics and pseudospintronics in graphene and topological insulators. (2012, background): “Motivated by these observations, a variety of different extrinsic spin-relaxation mechanisms were studied theoretically [35][36][37][38].”