6533b82bfe1ef96bd128cebd
RESEARCH PRODUCT
Importance of Spin-Orbit Interaction for the Electron Spin Relaxation in Organic Semiconductors
John E. AnthonyMarsha A. LothChristian BernhardKamil SedlakMarco CannasRory M. WilsonTheo KreouzisJames S. LordFrancis L. PrattMichele D'amicoWilliam P. GillinLaura NuccioLaura NuccioMartin HeeneyIgnacio HernándezIgnacio HernándezLeander SchulzBalaji PurushothamanSimone FratiniAlan J. DrewAlan J. DrewMaureen WillisFabrizio MessinaIain Mckenziesubject
PhotoluminescenceMaterials scienceGeneral Physics and Astronomy02 engineering and technology010402 general chemistry01 natural sciencesSpin-Orbit InteractionHyperfine structureComputingMilieux_MISCELLANEOUSCondensed matter physicsSpintronicsbusiness.industryOrganic SemiconductorRelaxation (NMR)Settore FIS/01 - Fisica SperimentaleSpin–orbit interactionMuon spin spectroscopy021001 nanoscience & nanotechnology0104 chemical sciencesOrganic semiconductorSemiconductorElectron Spin RelaxationCondensed Matter::Strongly Correlated Electrons[PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el]0210 nano-technologybusinessdescription
Despite the great interest organic spintronics has recently attracted, there is only a partial understanding of the fundamental physics behind electron spin relaxation in organic semiconductors. Mechanisms based on hyperfine interaction have been demonstrated, but the role of the spin-orbit interaction remains elusive. Here, we report muon spin spectroscopy and time-resolved photoluminescence measurements on two series of molecular semiconductors in which the strength of the spin-orbit interaction has been systematically modified with a targeted chemical substitution of different atoms at a particular molecular site. We find that the spin-orbit interaction is a significant source of electron spin relaxation in these materials.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-01 |