...Resumen

Las conclusiones en castellano se hayan después de cada capítulo

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... anisotropy

Since the applicability conditions for Eqs. (2.14, 2.15) are usually not fully satisfied, numerical calculations yield $k_{2}$ slightly dependent on the system size [74].

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... variables

See Refs. [155,142] or appendix A.1 for more details

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... systems

In the systems under study the Z axis is perpendicular to the surface

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... anisotropy

See appendix A.2 for a detailed description of the derivation of the effective uniaxial anisotropy

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... appendix

See Appendix A.3 for a detailed derivation of the on-site anisotropy from $E_{B}$

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