Photon-magnon interaction process: a mechanism of resonance linewidths of ferromagnet

• 来源期刊: 中国物理（英文版）
• 关键词: magnon unitary transformation linewidth
• 年，卷（期）: 2005,（1）
• 页码范围: 110-114
• 页数: 5页
• 语种: 英文

摘要

We consider the relaxation processes of parametric excitation of magnons in a microwave resonator. Using the approach of unitary transformation, we calculate the effective amplitude of three-boson terms of Hamiltonian, especially for photon-magnon interaction which is expected to contribute to the resonance linewidth of ferromagnets.