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The electronic structure and magnetic properties of La_{1-x}A_{x}MnO_3 are investigated. It is assumed that, at the outermost layer, the environment of the Mn ions does not have cubic symmetry. The e_g orbitals are split and the double…

Strongly Correlated Electrons · Physics 2009-10-31 M. J. Calderon , L. Brey , F. Guinea

Recent experimental studies on Fe substituted spinel CoCr$_{2}$O$_{4}$ have discovered multiple functional properties in the system such as temperature and composition dependent magnetic compensation, tunable exchange bias and…

Materials Science · Physics 2018-08-29 Debashish Das , Subhradip Ghosh

We perform first-principles density functional calculations to elucidate structural, electronic and magnetic properties at the interface of \ce{(0001)Cr2O3-(111)Pt} bilayers. This investigation is motivated by the fact that, despite the…

Materials Science · Physics 2024-05-09 Marlies Reher , Nicola A. Spaldin , Sophie F. Weber

By means of ab initio calculations within the density functional theory (DFT) electronic and magnetic properties of BaTiO3/LaMnO3 interface were investigated. An impact of ferroelectric overlayer thickness onto the interface properties was…

Materials Science · Physics 2022-06-07 Irina Piyanzina , Rinat Mamin

Interfaces play a substantial role for the functional properties of structured magnetic materials and magnetic multilayers. Modeling the functional behavior of magnetic materials requires the treatment of the relevant phenomena at the…

The occurence of spin-polarization at ZrO$_{2}$, Al$_{2}$O$_{3}$ and MgO surfaces is proved by means of \textit{ab-initio} calculations within the density functional theory. Large spin moments, as high as 1.56 $\mu_B$, develop at O-ended…

Materials Science · Physics 2009-11-11 S. Gallego , J. I. Beltran , J. Cerda , M. C. Munoz

Magnetic materials with the spinel structure (A$^{2+}$B$^{3+}_2$O$^4$) form the core of numerous magnetic devices, but ZnFe$_2$O$_4$ constitutes a peculiar example where the nature of the magnetism is still unresolved. Susceptibility…

Reports of emergent conductivity, superconductivity, and magnetism at oxide interfaces have helped to fuel intense interest in their rich physics and technological potential. Here we employ magnetic force microscopy to search for…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Feng Bi , Mengchen Huang , Chung-Wung Bark , Sangwoo Ryu , Chang-Beom Eom , Patrick Irvin , Jeremy Levy

We present a survey of the structural and magnetic properties of submonolayer transition metal dioxides on the (001) surfaces of the heavy face-centered cubic (fcc) noble metals Ir and Pt performed by spin-averaged scanning tunneling…

Materials Science · Physics 2019-10-08 M. Schmitt , C. H. Park , P. Weber , A. Jäger , J. Kemmer , M. Vogt , M. Bode

We report on first principles calculations of the electronic structure of La$_{0.7}$Sr$_{0.3}$MnO$_{3}$/SrTiO$_{3}$ junction with two possible types of interface terminations. We find that the La$_{0.7}$Sr$_{0.3}$O/TiO$_{2}$ interface…

Materials Science · Physics 2009-11-11 H. Zenia , G. A. Gehring , W. M. Temmerman

Roughness-insensitive and electrically controllable magnetization at the (0001) surface of antiferromagnetic chromia is observed using magnetometry and spin-resolved photoemission measurements and explained by the interplay of surface…

Materials Science · Physics 2010-07-27 Xi He , Yi Wang , Ning Wu , Anthony Caruso , Elio Vescovo , K. D. Belashchenko , Peter A. Dowben , Christian Binek

Magnetic 3d-ions doped into wide-gap oxides show signatures of room temperature ferromagnetism, although their concentration is two orders of magnitude smaller than that in conventional magnets. The prototype of these exceptional materials…

Materials Science · Physics 2009-11-13 C. D. Pemmaraju , R. Hanafin , T. Archer , H. B. Braun , S. Sanvito

A two dimensional electronic system with novel electronic properties forms at the interface between the insulators LaAlO$_3$ and SrTiO$_3$. Samples fabricated until now have been found to be either magnetic or superconducting, depending on…

Materials Science · Physics 2015-05-13 Lu Li , C. Richter , J. Mannhart , R. C. Ashoori

Density functional calculations are used to study magnetic and electronic properties of the spinel ferrites, ZnFe$_2$O$_4$ and MnFe$_2$O$_4$. Correct magnetic orderings are obtained. ZnFe$_2$O$_4$ is predicted to be a small gap insulator in…

Condensed Matter · Physics 2009-11-07 D. J. Singh , M. Gupta , R. Gupta

The presence of spin-orbit coupling drives the anomalous magnetotransport at oxide interfaces and forms the basis for numerous intriguing properties of these 2D electron systems, such as topologically protected phases or anti-localization.…

Strongly Correlated Electrons · Physics 2018-02-28 Patrick Seiler , Jone Zabaleta , Robin Wanke , Jochen Mannhart , Thilo Kopp , Daniel Braak

Emergent magnetic states at oxide interfaces arise from the interplay of charge transfer, orbital reconstruction, and dimensional confinement, offering a route to engineered correlated-electron behavior in nanoscale spintronic materials.…

It is shown that substitution of C or N for O recently proposed as a way to create ferromagnetism in otherwise nonmagnetic oxide insulators is curtailed by formation of impurity pairs, and the resultant C2 spin=1 dimers as well as the…

Materials Science · Physics 2010-12-30 Hua Wu , Alessandro Stroppa , Sung Sakong , Silvia Picozzi , Matthias Scheffler , Peter Kratzer

Heterostructure interface provides a powerful platform to observe rich emergent phenomena, such as interfacial superconductivity, nontrivial topological surface state. Here SrRuO3/SrIrO3 superlattices were epitaxially synthesized. The…

Materials Science · Physics 2017-01-17 Bin Pang , Lunyong Zhang , Y. B Chen , Jian Zhou , Shuhua Yao , Shantao Zhang , Yanfeng Chen

In this work, we investigate the structural, magnetic, and microwave magnetic dynamics of multilayered \([{\rm LSMO}/{\rm SRO}]_n\) heterostructures \((n = 1 \text{ and } 5)\) grown on SrTiO\(_3\) (001) substrates. X-ray diffraction…

Polarized neutron reflectivity measurements of a ferromagnetic [(LaMnO$_3$)$_{11.8}$/(SrMnO$_3$)$_{4.4}$]$_6$ superlattice reveal a modulated magnetic structure with an enhanced magnetization at the interfaces where LaMnO$_3$ was deposited…