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Jahn-Teller effect for controlling quantum correlations in hexanuclear Fe[Formula: see text] magnets.

Hamid Arian Zad1, Michal Jaščur2, Asad Ali3

  • 1Department of Theoretical Physics and Astrophysics, Faculty of Science of P. J. Šafárik University, Park Angelinum 9, 040 01, Košice, Slovak Republic. hamid.arian.zad@upjs.sk.

Scientific Reports
|August 19, 2025
PubMed
Summary
This summary is machine-generated.

We explored how Jahn-Teller distortion in iron complexes influences quantum properties. This distortion enhances quantum correlations, making these complexes promising for quantum information processing and molecular qubits.

Keywords:
Hexanuclear Fe[Formula: see text] ComplexesJahn-Teller EffectQuantum Correlations

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Area of Science:

  • Quantum physics
  • Molecular magnetism
  • Condensed matter physics

Background:

  • Hexanuclear iron (Fe) complexes exhibit complex magnetic and quantum behaviors.
  • Jahn-Teller distortion significantly impacts molecular properties by breaking symmetry.
  • Understanding these effects is crucial for developing novel quantum materials.

Purpose of the Study:

  • To theoretically investigate the low-temperature magnetic and quantum properties of hexanuclear Fe complexes.
  • To analyze the influence of competing exchange interactions and Jahn-Teller distortion on quantum properties.
  • To quantify quantum correlations and their modulation by the Jahn-Teller effect.

Main Methods:

  • Theoretical investigation of magnetic and quantum properties.
  • Construction of ground-state phase diagrams.
  • Analysis of magnetization curves.
  • Quantification of quantum correlations using tripartite entanglement negativity and conditional von Neumann entropy.

Main Results:

  • Competing exchange interactions and their asymmetries lift ground-state degeneracy, leading to complex quantum behavior.
  • Key magnetic phases and critical phenomena were identified.
  • The Jahn-Teller effect was found to enhance intra-triangle entanglement.
  • Inter-triangle correlations are modulated by the Jahn-Teller distortion.

Conclusions:

  • Hexanuclear Fe complexes serve as a promising molecular platform for tunable quantum correlations.
  • The findings suggest potential applications in quantum information processing and molecular qubits.
  • Jahn-Teller distortion plays a critical role in tailoring quantum correlations in these molecular systems.