Novel Mechanism of Biquadratic Coupling in Magnetic Superlattices |
| W. Gruhn Institute of Physics, Pedagogical University, Al. Armii Krajowej 13/15, 42-201 Częstochowa, Poland |
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| Using the modified total energy approach of Bruno, we prove that for the transition metal or rare-earth superlattices the additional scattering of free electrons on magnetic ion multipole moment gives rise to ferroquadrupolar biquadratic coupling between magnetic layers. We show that in this novel, intrinsic mechanism, the anisotropy of the magnetoresistivity should manifest itself. |
| DOI: 10.12693/APhysPolA.91.303 PACS numbers: 75.70.Cn |