Ferromagnetic resonance and spin-wave resonances in GaMnAsP films
Source abstract
Abstract
A series of Ga1-xMnxAs1-yPy films grown by MBE on GaAs (100) substrates was systematically studied by ferromagnetic resonance (FMR). Magnetic anisotropy parameters were obtained by analyzing the angular dependence of the FMR data. The results clearly show that the easy axis of the films shifts from the in-plane [100] direction to the out-of-plane [001], indicating the emergence of a strong tensile-strain-induced perpendicular anisotropy when the P content exceeds y ≈ 0.07. Multiple resonances were observed in Ga1-xMnxAs1-yPy films with thicknesses over 48 nm, demonstrating the existence of exchange-dominated non-propagating spin-wave modes governed by surface anisotropy.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic properties of thin films · ZnO doping and properties · Physics of Superconductivity and Magnetism
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, University of Notre Dame 1 , Notre Dame, Indiana 46556, USA
Department of Physics, Korea University 2 , Seoul 136-701, Korea
Funding
National Research Foundation of Korea · Korea University · National Science Foundation
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