Electric field control of spins in molecular magnets

Abstract

Coherent control of individual molecular spins in nano-devices is a pivotal prerequisite for fulfilling the potential promised by molecular spintronics. By applying electric field pulses during time-resolved electron spin resonance measurements, we measure the sensitivity of the spin in several antiferromagnetic molecular nanomagnets to external electric fields. We find a linear electric field dependence of the spin states in Cr${}_7$Mn, an antiferromagnetic ring with a ground-state spin of $S=1$, and in a frustrated Cu${}_3$ triangle, both with coefficients of about $2\mathrm{rad}{\mathrm{s}}^{-1}/\mathrm{V}{\mathrm{m}}^{-1}$. Conversely, the antiferromagnetic ring Cr${}_7$Ni, isomorphic with Cr${}_7$Mn but with $S=1/2$, does not exhibit a detectable effect. We propose that the spin-electric field coupling may be used for selectively controlling individual molecules embedded in nanodevices.

arXiv comment6 pages, 3 figures

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• Electric field tuning of magnetic states in single magnetic molecules
• Decoherence of a singlet-triplet superposition state under dipolar interactions of an uncorrelated environment
• Manipulation of spin cluster qubits by electric-field induced modulation of exchange coupling, $g$-factor, and axial anisotropy
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• Non-collinear first-principles studies of the spin-electric coupling in frustrated triangular molecular magnets
• Molecular magnetism in the multi-configurational self-consistent field method
• Designing quantum error correction codes for practical spin qudit
• Enhancing Coherence with a Clock Transition and Dynamical Decoupling in the Cr${}_7$Mn Molecular Nanomagnet
• Universal quantum operation of spin-3/2 Blume-Capel chains
• Magnetoelectric effect in the mixed valence polyoxovanadate cage V${}_{12}$
• Polarization dependence of spin-electric transitions in molecular exchange qubits