title: Spin Dynamics and Low Energy Vibrations: Insights from Vanadyl-Based Potential Molecular Qubits.
abstract: Here we report the investigation of the magnetization dynamics of a vanadyl complex with diethyldithiocarbamate (Et2dtc-) ligands, namely [VO(Et2dtc)2] (1), in both solid-state and frozen solution. This showed an anomalous and unprecedentedly observed field dependence of the relaxation time, which was modeled with three contributions to the relaxation mechanism. The temperature dependence of the weight of the two processes dominating at low fields was found to well correlate with the low energy vibrations as determined by THz spectroscopy. This detailed experimental comparative study represents a fundamental step to understand the spin dynamics of potential molecular quantum bits, and enriches the guidelines to design molecule-based systems with enhanced quantum coherence.
authors.affiliation: Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Matteo
authors.identifier: 0000-0003-1357-6159
authors.initials: M
authors.lastname: Atzori
authors.affiliation: Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Lorenzo
authors.identifier: 0000-0003-4001-8363
authors.initials: L
authors.lastname: Tesi
authors.affiliation: Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.|European Laboratory for Nonlinear Spectroscopy, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Stefano
authors.identifier: 0000-0001-6492-1616
authors.initials: S
authors.lastname: Benci
authors.affiliation: School of Physics, AMBER and CRANN, Trinity College , Dublin 2, Ireland.
authors.forename: Alessandro
authors.identifier: 0000-0002-1948-4434
authors.initials: A
authors.lastname: Lunghi
authors.affiliation: Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.|European Laboratory for Nonlinear Spectroscopy, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Roberto
authors.identifier: 0000-0003-0260-0248
authors.initials: R
authors.lastname: Righini
authors.affiliation: European Laboratory for Nonlinear Spectroscopy, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Taschin
authors.affiliation: European Laboratory for Nonlinear Spectroscopy, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.|Dipartimento di Fisica ed Astronomia, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Renato
authors.initials: R
authors.lastname: Torre
authors.affiliation: Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Lorenzo
authors.identifier: 0000-0003-4785-1331
authors.initials: L
authors.lastname: Sorace
authors.affiliation: Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze , I50019 Sesto Fiorentino, Italy.
authors.forename: Roberta
authors.identifier: 0000-0003-3783-2700
authors.initials: R
authors.lastname: Sessoli