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Many-body theory of phonon-induced spin relaxation and decoherence

Park, Jinsoo and Luo, Yao and Zhou, Jin-Jian and Bernardi, Marco (2022) Many-body theory of phonon-induced spin relaxation and decoherence. Physical Review B, 106 (17). Art. No. 174404. ISSN 2469-9950. doi:10.1103/physrevb.106.174404.

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First-principles calculations enable accurate predictions of electronic interactions and dynamics. However, computing the electron spin dynamics remains challenging. The spin-orbit interaction causes various dynamical phenomena that couple with phonons, such as spin precession and spin-flip e-ph scattering, which are difficult to describe with current first-principles calculations. In this work, we show a rigorous framework to study phonon-induced spin relaxation and decoherence, by computing the spin-spin correlation function and its vertex corrections due to e-ph interactions. We apply this approach to a model system and develop corresponding first-principles calculations of spin relaxation in GaAs. Our vertex-correction formalism is shown to capture the Elliott-Yafet, Dyakonov-Perel, and strong-precession mechanisms—three independent spin decoherence regimes with distinct physical origins—thereby unifying their theoretical treatment and calculation. Our method is general and enables quantitative studies of spin relaxation, decoherence, and transport in a wide range of materials and devices.

Item Type:Article
Related URLs:
URLURL TypeDescription InCaltech News
Park, Jinsoo0000-0002-1763-5788
Luo, Yao0000-0001-7026-1271
Zhou, Jin-Jian0000-0002-1182-9186
Bernardi, Marco0000-0001-7289-9666
Additional Information:This work was supported by the National Science Foundation under Grants No. 1750613 and No. 1936350, which provided for method development, and Grant No. 2209262, which provided for code development. J.P. acknowledges support by the Korea Foundation for Advanced Studies. This research used resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility located at Lawrence Berkeley National Laboratory, operated under Contract No. DE-AC02-05CH11231.
Funding AgencyGrant Number
Korea Foundation for Advanced StudiesUNSPECIFIED
Department of Energy (DOE)DE-AC02-05CH11231
Issue or Number:17
Record Number:CaltechAUTHORS:20221205-666301600.6
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118233
Deposited By: Research Services Depository
Deposited On:06 Jan 2023 16:50
Last Modified:27 Feb 2023 23:23

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