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Exploration of Fermi-Pasta-Ulam Behavior in a Magnetic System.
- Source :
-
Physical Review Letters . 4/20/2018, Vol. 120 Issue 16, p1-1. 1p. - Publication Year :
- 2018
-
Abstract
- We study nonlinear spin motion in one-dimensional magnetic chains. We find significant differences from the classic Fermi-Pasta-Ulam (FPU) problem examining nonlinear elastic motion in a chain. We find that FPU behavior, the transfer of energy among low order eigenmodes, does not occur in magnetic systems with only exchange and external fields, but does exist if a uniaxial anisotropy is also present. The FPU behavior may be altered or turned off through the magnitude and orientation of an external magnetic field. A realistic micromagnetic model shows such behavior could be measurable. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ELASTICITY
*ENERGY transfer
*MICROMAGNETICS
Subjects
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 120
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 129325975
- Full Text :
- https://doi.org/10.1103/PhysRevLett.120.167203