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Thermal rounding of the depinning transition in ultrathin Pt/Co/Pt films
- Source :
- Phys. Rev. B 85, 214416 (2012)
- Publication Year :
- 2012
-
Abstract
- We perform a scaling analysis of the mean velocity of extended magnetic domain walls driven in ultrathin Pt/Co/Pt ferromagnetic films with perpendicular anisotropy, as a function of the applied external field for different film-thicknesses. We find that the scaling of the experimental data around the thermally rounded depinning transition is consistent with the universal depinning exponents theoretically expected for elastic interfaces described by the one-dimensional quenched Edwards-Wilkinson equation. In particular, values for the depinning exponent $\beta$ and thermal rounding exponent $\psi$ are tested and the present analysis of the experimental data is compatible with $\beta=0.33$ and $\psi=0.2$, in agreement with numerical simulations.<br />Comment: 8 pages, 8 figures
- Subjects :
- Condensed Matter - Disordered Systems and Neural Networks
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 85, 214416 (2012)
- Publication Type :
- Report
- Accession number :
- edsarx.1204.0969
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.85.214416