Observation of spin-electric transitions in a molecular exchange qubit

• URL: http://arxiv.org/abs/2403.11214v1
• Date: Sun, 17 Mar 2024 13:28:14 GMT
• Title: Observation of spin-electric transitions in a molecular exchange qubit
• Authors: Florian le Mardelé, Ivan Mohelský, Jan Wyzula, Milan Orlita, Philippe Turek, Filippo Troiani, Athanassios K. Boudalis,
• Abstract summary: We perform low-temperature magnetic far-IR spectroscopy on a molecular spin triangle (Fe3) We provide the first experimental evidence of spin-electric transitions in polynuclear complexes.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Electric fields represent an ideal means for controlling spins at the nanoscale and, more specifically, for manipulating protected degrees of freedom in multispin systems. Here we perform low-temperature magnetic far-IR spectroscopy on a molecular spin triangle (Fe3) and provide the first experimental evidence of spin-electric transitions in polynuclear complexes. The co-presence of electric- and magnetic-dipole transitions, allows us to estimate the spin-electric coupling. Based on spin Hamiltonian simulations of the spectra, we identify the observed transitions and introduce the concept of a generalized exchange qubit. This applies to a wide class of molecular spin triangles, and includes the scalar chirality and the partial spin sum qubits as special cases.

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