In this thesis the effects, induced by the underlying cubic crystal structure and its resulting anisotropies, on the collective spin excitations in the chiral magnet Cu2OSeO3 are investigated. In the first part the resonance modes of the different phases of the chiral magnet are calculated numerically in presence of the cubic magnetocrystalline anisotropy, focusing on the low temperature skyrmion phase. The second part comprises angle resolved microwave spectroscopy experiments on two Cu2OSeO3 crystals, which finally allow to extract the respective anisotropy strengths.
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In this thesis the effects, induced by the underlying cubic crystal structure and its resulting anisotropies, on the collective spin excitations in the chiral magnet Cu2OSeO3 are investigated. In the first part the resonance modes of the different phases of the chiral magnet are calculated numerically in presence of the cubic magnetocrystalline anisotropy, focusing on the low temperature skyrmion phase. The second part comprises angle resolved microwave spectroscopy experiments on two Cu2OSeO3 c...
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