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(LaNiO3)n/(LaMnO3)2 superlattices were grown using ozone-assisted molecular beam epitaxy, where LaNiO3 is a paramagnetic metal and LaMnO3 is an antiferromagnetic insulator. The superlattices exhibit excellent crystallinity and interfacial…

(LaNiO3)n/(SrMnO3)2 superlattices were grown using ozone-assisted molecular beam epitaxy. In situ reflection high energy electron diffraction and x-ray scattering has been used to characterize the structural properties of the superlattices,…

Materials Science · Physics 2009-11-13 S. J. May , T. S. Santos , A. Bhattacharya

Using first-principles techniques, we study the structural, magnetic and electronic properties of (111)-oriented (LaMnO$_3$)$_{2n}$$\vert$(SrMnO$_3$)$_{n}$ superlattices of varying thickness ($n=2,4,6$). We find that the properties of the…

High-quality Pr0.7Ca0.3MnO3/SrRuO3 superlattices were fabricated by pulsed laser deposition and were investigated by high-resolution transmission electron microscopy and SQUID magnetometry. Superlattices with orthorhombic and tetragonal…

Strongly Correlated Electrons · Physics 2015-05-27 M. Ziese , I. Vrejoiu , E. Pippel , E. Nikulina , D. Hesse

Superlattices of (LaMnO3)2n/(SrMnO3)n (n=1 to 5), composed of the insulators LaMnO3 and SrMnO3, undergo a metal-insulator transition as a function of n, being metallic for n<=2 and insulating for n>=3. Measurements of transport,…

We study the magnetic structure of the (LaMnO$_3$)$_{2n}$/(SrMnO$_3$)$_n$ superlattices from density-functional calculations. In agreement with the experiments, we find that the magnetism changes with the layer thickness `n'. The reason for…

Materials Science · Physics 2010-03-10 B. R. K. Nanda , S. Satpathy

We have investigated the magnetotransport properties of La0.7Sr0.3MnO3/BaTiO3 superlattices, grown on SrTiO3 substrate by pulsed laser deposition technique, both with current-in-plane and current-perpendicular-to-the-plane directions.…

Materials Science · Physics 2009-11-11 P. Murugavel , W. Prellier

We have studied the optical properties of four (LaNiO$_3$)$_n$/(LaMnO$_3$)$_2$ superlattices (SL) ($n$=2, 3, 4, 5) on SrTiO$_3$ substrates. We have measured the reflectivity at temperatures from 20 K to 400 K, and extracted the optical…

Strongly Correlated Electrons · Physics 2015-06-24 P. Di Pietro , J. Hoffman , A. Bhattacharya , S. Lupi , A. Perucchi

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.…

Using first-principles calculations based on the density functional theory, we show a strong strain dependence of magnetic order in (LaMnO$_{3}$)$_n$/(SrMnO$_{3}$)$_{2n}$ (001) superlattices with $n=1,2$. The epitaxial strain lifts the…

Strongly Correlated Electrons · Physics 2015-06-11 Qinfang Zhang , Shuai Dong , Baolin Wang , Seiji Yunoki

We measure the optical conductivity of (SrMnO3)n/(LaMnO3)2n superlattices (SL) for n=1,3,5, and 8 and 10 < T < 400 K. Data show a T-dependent insulator to metal transition (IMT) for n \leq 3, driven by the softening of a polaronic…

Materials Science · Physics 2010-12-16 A. Perucchi , L. Baldassarre , A. Nucara , P. Calvani , C. Adamo , D. G. Schlom , P. Orgiani , L. Maritato , S. Lupi

The structural and magnetic properties of a series of superlattices consisting of two ferromagnetic metals La$_{0.7}$Sr$_{0.3}$MnO$_3$ (LSMO) and SrRuO$_3$ (SRO) grown on (001) oriented SrTiO$_3$ are studied. Superlattices with a fixed LSMO…

Materials Science · Physics 2009-11-11 P. Padhan , W. Prellier , R. C. Budhani

Superlattices consist of two ferromagnets La0.7Sr0.3MnO3(LSMO)and SrRuO3(SRO) were grown in (110)-orientation on SrTiO3(STO) substrates. The x-ray diffraction and Raman spectra of these superlattices show the presence of in-plane…

Materials Science · Physics 2014-03-07 B. C. Behera , A. V. Ravindra , P. Padhan , Prellier Wilfrid

The electronic and magnetic properties of NdNiO$_3$ (NNO) thin films are very sensitive to epitaxial strain and to the proximity to ferromagnetic oxides. In this work, we investigate the structural, electronic, and magnetic properties of…

Materials Science · Physics 2024-09-20 Henrique M. M. Cardoso , Maria C. O. Aguiar , Cinthia Piamonteze , Walber H. Brito

The two-orbital double-exchange model is employed for the study of the magnetic and orbital orders in ($R$MnO$_3$)$_n$/($A$MnO$_3$)$_{2n}$ ($R$: rare earths; $A$: alkaline earths) superlattices. The A-type antiferromagnetic order is…

Strongly Correlated Electrons · Physics 2012-12-11 Shuai Dong , Qinfang Zhang , Seiji Yunoki , J. -M. Liu , Elbio Dagotto

We report on the electronic properties of superlattices composed of three different antiferromagnetic insulators, NdMnO3/SrMnO3/LaMnO3 grown on SrTiO3 substrates. Photoemission spectra obtained by tuning the x-ray energy at the Mn 2p -> 3d…

Strongly Correlated Electrons · Physics 2015-03-19 J. W. Seo , B. T. Phan , J. Lee , H. -D. Kim , C. Panagopoulos

The understanding of the interplay between different orders in a solid is a key challenge in highly correlated electronic systems. In real systems this is even more difficult since disorder can have a strong influence on the subtle balance…

Strongly Correlated Electrons · Physics 2018-05-02 A. Suter , G. Logvenov , A. V. Boris , F. Baiutti , F. Wrobel , L. Howald , E. Stilp , Z. Salman , T. Prokscha , B. Keimer

At interfaces between oxide materials, lattice and electronic reconstructions always play important roles in exotic phenomena. In this study, the density functional theory and maximally localized Wannier functions are employed to…

Materials Science · Physics 2017-04-17 Yakui Weng , Jun-Jie Zhang , Bin Gao , Shuai Dong

The modulation of charge density and spin order in (LaMnO$_3$)$_{2n}$/(SrMnO$_3$)$_n$ ($n$=1-4) superlattices is studied via Monte Carlo simulations of the double-exchange model. G-type antiferromagnetic barriers in the SrMnO$_{3}$ regions…

Strongly Correlated Electrons · Physics 2008-11-24 Shuai Dong , Rong Yu , Seiji Yunoki , Gonzalo Alvarez , J. -M. Liu , Elbio Dagotto

Composition-dependent structural and polar properties of epitaxial short-period CaTiO_3/SrTiO_3/BaTiO_3 superlattices grown on a SrTiO_3 substrate are investigated with first-principles density-functional theory computational techniques.…

Materials Science · Physics 2009-12-16 Serge M. Nakhmanson , K. M. Rabe , David Vanderbilt
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