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- W4386696965 endingPage "171232" @default.
- W4386696965 startingPage "171232" @default.
- W4386696965 abstract "We simulate the magnetization dynamics of a permalloy spheroid of nanoscopic size in zero external field, such that both dipolar and exchange interactions are important. Low excitation power is used to obtain the frequencies and mode patterns of many normal modes. At higher power, non-linear three and four mode couplings between magnons carrying orbital angular momentum are observed to give rise to Suhl instabilities. Suhl’s analysis of the selection rules governing the allowed processes is extended to initial states other than uniform precession. These rules are studied and confirmed by the simulations. Both down- and up-conversion are seen as well as three and four-mode processes. General trends are inferred for preferred instabilities among those that are allowed, although the thresholds for some instabilities appear to be very high." @default.
- W4386696965 created "2023-09-14" @default.
- W4386696965 creator A5051330196 @default.
- W4386696965 creator A5069440682 @default.
- W4386696965 creator A5086661531 @default.
- W4386696965 date "2023-12-01" @default.
- W4386696965 modified "2023-09-27" @default.
- W4386696965 title "Suhl instabilities in nanoscopic spheroids" @default.
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