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arXiv · 2212.06091

Photoinduced Magnetic Transitions and Excitonic Order Enhancement in Spin Crossover Strongly Correlated Electron Systems

Yuri. S. Orlov·Sergey. V. Nikolaev
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Abstract

The effects associated with exciton Bose condensate formation in strongly correlated spin crossover systems are considered within the effective Hamiltonian obtained from the two-orbital Hubbard-Kanamori model. The collective excitations spectrum at various points of the temperature-crystal field phase diagram is calculated. The role of the electron-phonon interaction is discussed. The exciton and magnetic order photoenhancement (induction) in strongly correlated spin crossover systems a new mechanism based on the cooperative effect of electron-phonon and interatomic exchange interactions and the appearance of a massive collective phase mode is demonstrated.

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Yuri. S. Orlov, Sergey. V. Nikolaev. 2022-12-12. Photoinduced Magnetic Transitions and Excitonic Order Enhancement in Spin Crossover Strongly Correlated Electron Systems. https://arxiv.org/abs/2212.06091

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