Work

Power dependence of electron paramagnetic resonance: Analytical solution of Landau–Lifshitz–Gilbert equation

Year: 2025

Type: article

Abstract: The solutions of the Landau–Lifshitz–Gilbert (LLG) equation reveal nonlinear effects in electron spin dynamics. Here, the nonmonotonic power dependence of the electron paramagnetic resonance (EPR) signal intensity is derived by solving the LLG equation. The analytical solutions of a spin moment are obtained for linearly polarized microwaves with any power. A tendency of susceptibility from linear to nonlinear is exhibited with increasing microwave power. Both low- and high-power dependences of EPR signal intensity of standard sample 1,3-bisdiphenylene-2-phenylallyl are well explained by the tendency. These findings provide valuable insights into nonlinear behavior of spin dynamics and the quantitative analysis of paramagnetic centers.

Source: Journal of Applied Physics

DOI: 10.1063/5.0256640

Authors: Zhenlin Jia, Shuchen Wang, Tong Li, Zenan Zhang, Xiaowei Jin, Desheng Xue

Institution: Lanzhou University

Language: English

Topic: Electron Spin Resonance Studies

Subfield: Biophysics

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funders: National Natural Science Foundation of China, National Key Research and Development Program of China, Overseas Expertise Introduction Project for Discipline Innovation