(η⁸-Cyclooctatetraene)(η⁵-fluorenyl)titanium: a processable molecular spin qubit with optimized control of the molecule-substrate interface.

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 hydro

SUBMITTER: Wisbeck S 

PROVIDER: S-EPMC11325857 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature