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We observed the Spin-Electric Effect (SEE) in a lanthanide complex, demonstrating its potential for molecule-based spintronics. The study highlights how electric fields influence molecular spin states, offering new tuning possibilities.

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Area of Science:

  • Molecular spintronics
  • Quantum chemistry
  • Solid-state physics

Background:

  • The Spin-Electric Effect (SEE) influences molecular spin states via electric fields, crucial for low-power spintronics.
  • Achieving SEE in molecular systems is challenging due to weak spin-electric field coupling.

Purpose of the Study:

  • To experimentally observe and characterize the SEE in a mononuclear lanthanide complex.
  • To elucidate the role of molecular symmetry and crystal field parameters in SEE.

Main Methods:

  • Electric Field Modulated Electron Paramagnetic Resonance (EFEPR) spectroscopy.
  • Ab initio quantum chemical calculations.
  • Analysis of g-tensor anisotropy and crystal field parameters.

Main Results:

  • A relevant SEE was observed in the studied lanthanide complex.
  • Significant anisotropy in SEE was found, with the g-tensor component perpendicular to the electric field being most affected.
  • Molecular symmetry breaking was identified as a key factor, and off-diagonal crystal field parameters were found to be most sensitive to electric fields.

Conclusions:

  • The study confirms the feasibility of SEE in molecular systems, specifically in lanthanide complexes.
  • Experimental configurations can be optimized by understanding SEE anisotropy for tuning spin transitions.
  • Electric-field-mediated state mixing, driven by symmetry breaking, is central to the observed SEE.