Quantum interference measurement of spin interactions in a bio-organic/semiconductor device structure

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dc.contributor.authorDeo, Vincenten
dc.contributor.authorZhang, Yaoen
dc.contributor.authorSoghomonian, Victoria G.en
dc.contributor.authorHeremans, Jean J.en
dc.contributor.departmentPhysicsen
dc.date.accessioned2019-01-28T17:56:17Zen
dc.date.available2019-01-28T17:56:17Zen
dc.date.issued2015-03-30en
dc.description.abstractQuantum interference is used to measure the spin interactions between an InAs surface electron system and the iron center in the biomolecule hemin in nanometer proximity in a bio-organic/semiconductor device structure. The interference quantifies the influence of hemin on the spin decoherence properties of the surface electrons. The decoherence times of the electrons serve to characterize the biomolecule, in an electronic complement to the use of spin decoherence times in magnetic resonance. Hemin, prototypical for the heme group in hemoglobin, is used to demonstrate the method, as a representative biomolecule where the spin state of a metal ion affects biological functions. The electronic determination of spin decoherence properties relies on the quantum correction of antilocalization, a result of quantum interference in the electron system. Spin-flip scattering is found to increase with temperature due to hemin, signifying a spin exchange between the iron center and the electrons, thus implying interactions between a biomolecule and a solid-state system in the hemin/InAs hybrid structure. The results also indicate the feasibility of artificial bioinspired materials using tunable carrier systems to mediate interactions between biological entities.en
dc.description.notesThe work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under Award no. DOE DE-FG02-08ER46532.en
dc.description.sponsorshipU.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DOE DE-FG02-08ER46532]en
dc.format.extent5en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/srep09487en
dc.identifier.issn2045-2322en
dc.identifier.other9487en
dc.identifier.pmid25820781en
dc.identifier.urihttp://hdl.handle.net/10919/87053en
dc.identifier.volume5en
dc.language.isoen_USen
dc.publisherSpringer Natureen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectconduction electronsen
dc.subjectweak-localizationen
dc.subjectheminen
dc.subjectinasen
dc.subjectporphyrinsen
dc.subjectbehavioren
dc.subjectsurfaceen
dc.subjectsystemen
dc.subjectmetalen
dc.titleQuantum interference measurement of spin interactions in a bio-organic/semiconductor device structureen
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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