Polarization dependence of spin-electric transitions in molecular exchange qubits

Abstract

Quasi-optical experiments are emerging as a powerful technique to probe magnetic transitions in molecular spin systems. However, the simultaneous presence of the electric- and magnetic-dipole induced transitions poses the challenge of discriminating between these two contributions. Besides, the identification of the spin-electric transitions can hardly rely on the peak intensity, because of the current uncertainties on the value of the spin-electric coupling in most molecular compounds. Here, we compute the polarizations required for electric- and magnetic-dipole induced transitions through spin-Hamiltonian models of molecular spin triangles. We show that the polarization allows a clear discrimination between the two kinds of transitions. In addition, it allows one to identify the physical origin of the zero-field splitting in the ground multiplet, a debated issue with significant implications on the coherence properties of the spin qubit implemented in molecular spin triangles.

References in corpus (15)

• Spin-Electric Coupling in Molecular Magnets
• Electronic Orbital Currents and Polarization in Mott Insulators
• Electric field control of spins in molecular magnets
• Spin electric effects in molecular antiferromagnets
• Quantum coherent spin-electric control in a molecular nanomagnet at clock transitions
• Coherent spin control by electrical manipulation of the magnetic anisotropy
• Mechanism of Ground State Selection in the Frustrated Molecular Spin Cluster V15
• Hyperfine-induced decoherence in triangular spin-cluster qubits
• Chirality of triangular antiferromagnetic clusters as a qubit
• General Magnetic Transition Dipole Moments for Electron Paramagnetic Resonance
• Electric control of spin states in frustrated triangular molecular magnets
• Observation of spin-electric transitions in a molecular exchange qubit
• Manipulation of spin cluster qubits by electric-field induced modulation of exchange coupling, $g$-factor, and axial anisotropy
• Non-collinear first-principles studies of the spin-electric coupling in frustrated triangular molecular magnets
• Dzyaloshinskii-Moriya Interaction-Induced Magnetoelectric Coupling in a tetrahedral Molecular Spin-Frustrated System