Microwave absorption in YBa2Cu3O7−δ-manganite superlattices

Interfacial magnetism in manganite superlattices

We use a two-orbital double-exchange model including superexchange interactions, Jahn-Teller lattice distortions, and long-range Coulomb interactions to investigate the origin of magnetically disordered interfaces between ferromagnetic metallic (FM) and antiferromagnetic insulating (AFI) manganites in FM/AFI superlattices. The induced magnetic moment in the AFI layer varies nonmonotonically wit...

Electronic and magnetic reconstructions in manganite superlattices

We investigate the electronic reconstruction at the interface between ferromagnetic metallic (FM) and antiferromagnetic insulating (AFI) manganites in superlattices using a two-orbital double-exchange model including superexchange interactions, Jahn-Teller lattice distortions, and long-range Coulomb interactions. The magnetic and transport properties critically depend on the thickness of the AF...

Delta doping of ferromagnetism in antiferromagnetic manganite superlattices.

We demonstrate that delta doping can be used to create a dimensionally confined region of metallic ferromagnetism in an antiferromagnetic (AFM) manganite host, without introducing any explicit disorder due to dopants or frustration of spins. Theoretical consideration of these additional carriers shows that they cause a local enhancement of ferromagnetic double exchange with respect to AFM super...

Absorption in microwave scattering systems

U. Kuhl and H.-J. Stöckmann Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany M. Mart́ınez-Mares Departamento de F́ısica, UAM-Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, 09340 México D. F., México R.A. Méndez-Sánchez Centro de Ciencias F́ısicas, Universidad Nacional Autónoma de México, A.P 48-3, 62210, Cuernavaca, Mor., México J. Main Institut für Th...

Multiferroicity in manganite/titanate superlattices determined by oxygen pressure-mediated cation defects