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Magnetic groundstate and Fermi surface of bcc Eu

J. Kunes R. Laskowski
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Abstract

Using spin-spiral technique within the full potential linearized augmented-plane-waves (LAPW) electronic structure method we investigate the magnon spectrum and Néel temperature of bcc Eu. Ground state corresponding to an incommensurate spin-spiral is obtained in agreement with experiment and previous calculations. We demonstrate that the magnetic coupling is primarily through the intra-atomic $f-s$ and $f-d$ exchange and Ruderman-Kittel-Kasuya-Yosida mechanism. We show that the existence of this spin-spiral is closely connected to a nesting feature of the Fermi surface which was not noticed before.

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J. Kunes R. Laskowski. 2004-04-15. Magnetic groundstate and Fermi surface of bcc Eu. https://doi.org/10.1103/physrevb.70.174415

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