Nonlinear relaxation dynamics of dilute magnetic alloys

✍ Scribed by Y.M. Zhang

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 474 KB
• Volume: 117
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/0378-4371(83)90127-9

✦ Synopsis

Based on Robertson's formalism, a microscopic theory of the equations of motion for dilute magnetic alloys is derived in the relaxation process. Within the s-d model, the integral with memory kernel is calculated to the second order of the interaction.

The final result is a set of nonlinear equations of motion which holds for the whole temperature range. Besides Bloch type damping, Landau-Lifschitz type terms are found. It is shown that even at high temperature the phenomenological Hasegawa equations must be modified by additional nonlinear terms. In addition, the linearized version and the rapid spin-lattice relaxation (isothermal) case are discussed.