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(η8-Cyclooctatetraene)(η5-fluorenyl)titanium: a processable molecular spin qubit with optimized control of the molecule-substrate interface.
Wisbeck, Sarita; Sorrentino, Andrea Luigi; Santana, Francielli S; de Camargo, Luana C; Ribeiro, Ronny R; Salvadori, Enrico; Chiesa, Mario; Giaconi, Niccolò; Caneschi, Andrea; Mannini, Matteo; Poggini, Lorenzo; Briganti, Matteo; Serrano, Giulia; Soares, Jaísa F; Sessoli, Roberta.
Afiliación
  • Wisbeck S; Department of Chemistry, Federal University of Paraná, Centro Politécnico Jardim das Américas 81530-900 Curitiba PR Brazil.
  • Sorrentino AL; Department of Chemistry "U. Schiff" (DICUS) and INSTM Research Unit, University of Florence Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy roberta.sessoli@unifi.it.
  • Santana FS; Department of Chemistry, Federal University of Paraná, Centro Politécnico Jardim das Américas 81530-900 Curitiba PR Brazil.
  • de Camargo LC; Department of Chemistry, Federal University of Paraná, Centro Politécnico Jardim das Américas 81530-900 Curitiba PR Brazil.
  • Ribeiro RR; Department of Chemistry, Federal University of Paraná, Centro Politécnico Jardim das Américas 81530-900 Curitiba PR Brazil.
  • Salvadori E; Department of Chemistry, University of Turin Via Giuria 7 10125 Torino Italy.
  • Chiesa M; Department of Chemistry, University of Turin Via Giuria 7 10125 Torino Italy.
  • Giaconi N; Department of Chemistry "U. Schiff" (DICUS) and INSTM Research Unit, University of Florence Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy roberta.sessoli@unifi.it.
  • Caneschi A; Department of Industrial Engineering (DIEF) and INSTM Research Unit, University of Florence Via di S. Marta 3 50139 Firenze Italy.
  • Mannini M; Department of Chemistry "U. Schiff" (DICUS) and INSTM Research Unit, University of Florence Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy roberta.sessoli@unifi.it.
  • Poggini L; Institute for Chemistry of OrganoMetallic Compounds (ICCOM-CNR) Via Madonna del Piano 50019 Sesto Fiorentino Italy.
  • Briganti M; Department of Chemistry "U. Schiff" (DICUS) and INSTM Research Unit, University of Florence Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy roberta.sessoli@unifi.it.
  • Serrano G; Department of Industrial Engineering (DIEF) and INSTM Research Unit, University of Florence Via di S. Marta 3 50139 Firenze Italy.
  • Soares JF; Department of Chemistry, Federal University of Paraná, Centro Politécnico Jardim das Américas 81530-900 Curitiba PR Brazil.
  • Sessoli R; Department of Chemistry "U. Schiff" (DICUS) and INSTM Research Unit, University of Florence Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy roberta.sessoli@unifi.it.
Chem Sci ; 2024 Aug 09.
Article en En | MEDLINE | ID: mdl-39156928
ABSTRACT
Depositing single paramagnetic molecules on surfaces for sensing and quantum computing applications requires subtle topological control. To overcome issues that are often encountered with sandwich metal complexes, we exploit here the low symmetry architecture and suitable vaporability of mixed-sandwich [FluTi(cot)], Flu = fluorenyl, cot = cyclooctatetraene, to drive submonolayer coverage and select an adsorption configuration that preserves the spin of molecules deposited on Au(111). Electron paramagnetic resonance spectroscopy and ab initio quantum computation evidence a d z 2 ground state that protects the spin from phonon-induced relaxation. Additionally, computed and measured spin coherence times exceed 10 µs despite the molecules being rich in hydrogen. A thorough submonolayer investigation by scanning tunneling microscopy, X-ray photoelectron and absorption spectrocopies and X-ray magnetic circular dichroism measurements supported by DFT calculations reveals that the most stable configuration, with the fluorenyl in contact with the metal surface, prevents titanium(iii) oxidation and spin delocalization to the surface. This is a necessary condition for single molecular spin qubit addressing on surfaces.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chem Sci Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chem Sci Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido