Quantum transport in carbon nanotubes covalently functionalized with magnetic molecules
Autor(en): | Schnee, Michael Besson, Claire Frielinghaus, Robert Lurz, Christian Koegerler, Paul Schneider, Claus M. Meyer, Carola |
Stichwörter: | carbon nanotubes; magnetic molecules; molecular electronics; Physics; Physics, Condensed Matter; quantum dots; SINGLE-MOLECULE; SPIN; TETRAMANGANESE COMPLEXES; TRANSISTOR | Erscheinungsdatum: | 2016 | Herausgeber: | WILEY-V C H VERLAG GMBH | Journal: | PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | Volumen: | 253 | Ausgabe: | 12 | Startseite: | 2424 | Seitenende: | 2427 | Zusammenfassung: | We report on quantum transport measurements of a carbon nanotube (CNT) quantum dot that is functionalized with magnetic {Mn-4} complexes. The coupling between the spin-5/2 Mn-II ions within each {Mn-4} complex is predominantly antiferromagnetic. Coulomb diamond measurements at T=4K reveal that the covalent attachment of the complexes to the CNT framework has only little influence on the carbon nanotube quantum dot. Surprisingly, a strong increase of noise is observed upon cooling the sample to T=30 mK. Time traces of the current taken at a diamond edge reveal a random telegraph signal. We attribute this to fluctuations of molecular spin states of the attached {Mn-4} complexes. |
ISSN: | 03701972 | DOI: | 10.1002/pssb.201600292 |
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geprüft am 19.05.2024