---

Heterostructures with ultrathin layers are an exciting playground for materials science, since quantum confinement and interfacial properties often lead to new functionalities. In this talk a survey is given of the magnetic and magnetotransport properties of SrRuO3/manganite superlattices and trilayers. The itinerant ferromagnet SrRuO3 has a comparatively high conductivity and large magnetocrystalline anisotropy and can be grown in excellent quality in these all-perovskite heterostructures. The properties of the superlattices are rather complex showing a transition from orthorhombic to tetragonal crystalline symmetry of the SrRuO3 layers coupled with large changes in the magnetocrystalline and magnetoresistance anisotropy. Embedding of La0.7Ba0.3MnO3 within SrRuO3 layers leads to the stabilization of ferromagnetism above 150 K in single unit cell thick manganite layers. This appears to be related to an interfacial anomalous Hall effect observed in the superlattices.

---

Michael Ziese, Leipzig University
Seminar Room 0.02, ETP
Contact: Ionela Verjoiu