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Spin-wave excitations in epitaxial ultrathin FeCo with zero magnetocrystalline anisotropy

Sperl, Matthias ; Kipferl, Wolfgang ; Dumm, Martin ; Bayreuther, Günther
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Date of publication of this fulltext: 05 Aug 2009 13:33


Abstract

Spin-wave theory predicts reduced thermal spin-wave excitations due to a magnetic anisotropy. Recent results show that a strong uniaxial in-plane anisotropy in ultrathin Fe/GaAs(001) films indeed stabilizes the ferromagnetic order versus thermal spin excitations [Kipferl et al., J. Appl. Phys. 97, 10B313 (2005)]. In order to study whether a fourth-order in-plane anisotropy has a similar effect ...

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