首页|Investigation of ferromagnetism increasing with the temperature in n-type ZnO
Investigation of ferromagnetism increasing with the temperature in n-type ZnO
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NSTL
Elsevier
? 2021 Elsevier B.V.We propose a model with a theory to simulate the ferromagnetism increasing with the temperature observed from some ferromagnetic n-type ZnOs. This phenomenon reveals the possible mechanism of ferromagnetism for us to propose that ferromagnetism originates from the electron's spin split in the dopant-induced impurity states by Coulomb excitations. Our theoretical results indicate that the electron-phonon interaction effectively influences ferromagnetism, which can localize the electrons in the impurity states leading to the enhancement of ferromagnetism. At the same time, the electron-phonon interaction suppresses the hybridization coupling between the impurity state and the conduction band, and this hybridization coupling can increase the electron density and ferromagnetism of the impurity state.
Electron-phonon interactionFerromagnetic ZnOPerturbation theory
Chen G.-L.、Sun S.-J.
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Department of Applied Physics National University of Kaohsiung
NSTL
Elsevier
