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Related papers: Electronic structures of hexagonal RMnO3 (R = Gd, …

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Thin films of La0.7Sr0.3MnO3 on MgO show a metal insulator transition and colossal magnetoresistance. The shape of this transition can be explained by intrinsic spatial inhomogeneities, which give rise to a domain structure of conducting…

Strongly Correlated Electrons · Physics 2009-11-07 T. Becker , C. Streng , Y. Luo , V. Moshnyaga , B. Damaschke , Nic Shannon , K. Samwer

Molecular adsorption at the surface of a 2D material poses numerous questions regarding the modification to the band structure and interfacial states, which of course deserve full attention. In line with this, first-principle density…

Materials Science · Physics 2020-03-27 Tanmay Das , Sesha Vempati

Mixed-valence perovskite manganites (Re$_{1-x}$A$_{x}$MnO$_{3}$ where Re=rare earth, A=alkaline earth) provide a unique opportunity to study the relationships between the structure and the magnetotransport properties due to an interplay…

Materials Science · Physics 2009-11-07 W. Prellier , Ph. Lecoeur , B. Mercey

Epitaxial thin films of hexagonal ErMnO3 fabricated on Pt(111)/Al2O3(0001) and YSZ(111) substrates exhibited both ferroelectric character and magnetic ordering at low temperatures. As the temperature was reduced, the ErMnO3 films first…

Strongly Correlated Electrons · Physics 2009-01-30 S. Y. Jang , D. Lee , J. -H. Lee , T. W. Noh , Y. Jo , M. -H. Jung , J. -S. Chung

Epitaxial thin films of multiferroic perovskite BiMnO3 were synthesized on SrTiO3 substrates, and orbital ordering and magnetic properties of the thin films were investigated. The ordering of the Mn^{3+} e_g orbitals at a wave vector (1/4…

Materials Science · Physics 2009-11-11 C. -H. Yang , T. Y. Koo , S. -H. Lee , C. Song , K. -B. Lee , Y. H. Jeong

Exfoliated magnetic 2D materials enable versatile tuning of magnetization, e.g., by gating or providing proximity-induced exchange interaction. However, their electronic band structure after exfoliation has not been probed, most likely due…

A previous study of the growth conditions has shown that single-phase BiFeO3 thin films can only be obtained in a narrow pressure-temperature window and that these films display a weak magnetic moment. Here we study in more detail the…

Materials Science · Physics 2009-11-13 H. Bea , M. Bibes , S. Petit , J. Kreisel , A. Barthelemy

We performed resonant and nonresonant x-ray diffraction studies of a Nd0.5Sr0.5MnO3 thin film that exhibits a clear first-order transition. Lattice parameters vary drastically at the metal-insulator transition at 170K (=T_MI), and…

Strongly Correlated Electrons · Physics 2009-11-11 Y. Wakabayashi , D. Bizen , H. Nakao , Y. Murakami , M. Nakamura , Y. Ogimoto , M. Izumi , K. Miyano , H. Sawa

Ferroelectric photovoltaics (FPVs) have drawn much attention owing to their high stability, environmental safety, anomalously high photovoltages, coupled with reversibly switchable photovoltaic responses. However, FPVs suffer from extremely…

Materials Science · Physics 2017-11-10 Hyeon Han , Donghoon Kim , Ji Hyun Lee , Jucheol Park , Sang Yeol Nam , Mingi Choi , Kijung Yong , Hyun Myung Jang

The exchange interactions and magnetic structure in layered system CuMnO2 (mineral crednerite) and in nonstoichiometric system Cu1.04Mn0.96O2, with triangular layers distorted due to orbital ordering of the Mn3+ ions, are studied by…

Strongly Correlated Electrons · Physics 2014-01-21 A. V. Ushakov , S. V. Streltsov , D. I. Khomskii

We have studied the electronic structure of epitaxially grown thin films of La$_{1-x}$Sr$_x$FeO$_3$ by {\it in-situ} photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS) measurements. The Fe 2$p$ and valence-band PES…

Strongly Correlated Electrons · Physics 2007-05-23 H. Wadati , D. Kobayashi , H. Kumigashira , K. Okazaki , T. Mizokawa , A. Fujimori , K. Horiba , M. Oshima , N. Hamada , M. Lippmaa , M. Kawasaki , H. Koinuma

We have investigated the electronic properties of epitaxial orthorhombic SrIrO3 thin-films under compressive strain. The metastable, orthorhombic SrIrO3 thin-films are synthesized on various substrates using an epi-stabilization technique.…

Strongly Correlated Electrons · Physics 2014-11-18 J. H. Gruenewald , J. Nichols , J. Terzic , G. Cao , J. W. Brill , S. S. A. Seo

Orthorhombic GdFeO$_3$ has attracted considerable attention in recent years because its magnetic structure is similar to that in the well-known BiFeO$_3$ material. We investigate electronic structure, magnetism, and optical properties of…

Materials Science · Physics 2017-07-26 Xu-Hui Zhu , Xiang-Bo Xiao , Xiang-Rong Chen , Bang-Gui Liu

SrRuO$_3$ (SRO) films are known to exhibit insulating behavior as their thickness approaches four unit cells. We employ electron energy$-$loss (EEL) spectroscopy to probe the spatially resolved electronic structures of both insulating and…

Strongly Correlated Electrons · Physics 2017-12-15 Subeen Pang , Yoonkoo Kim , Yeong Jae Shin , Byungmin Sohn , SeungYong Lee , Tae Won Noh , Miyoung Kim

Magnetic rare earths R have been proven to have a significant effect on the multiferroic properties of the orthorhombic manganites RMnO3. A re-examination of previous results from synchrotron based x-ray scattering experiments suggests that…

Strongly Correlated Electrons · Physics 2015-05-13 R Feyerherm , E Dudzik , O Prokhnenko , D N Argyriou

We used Raman scattering to study the lattice and magnetic excitations in the hexagonal HoMnO3 single crystals. The E2 phonon mode at 237 cm-1 is affected by the magnetic order. This mode is related to the displacement of Mn and O ions in…

Strongly Correlated Electrons · Physics 2018-10-17 J. Liu , Y. Gallais , M-A. Measson , A. Sacuto , S. W. Cheong , M. Cazayous

High-quality (001)-oriented (pseudo-cubic notation) ferromagnetic YTiO$_3$ thin films were epitaxially synthesized in a layer-by-layer way by pulsed laser deposition. Structural, magnetic and electronic properties were characterized by…

Materials Science · Physics 2015-09-15 Yanwei Cao , P. Shafer , Xiaoran Liu , D. Meyers , M. Kareev , S. Middey , J. W. Freeland , E. Arenholz , J. Chakhalian

We have studied the crystal and magnetic structures of Fe-doped hexagonal manganites LuMn1-xFexO3 (x = 0, 0.1, 0.2, and 0.3) by using bulk magnetization and neutron powder diffraction methods. The samples crystalize consistently in a…

$V_2O_3$ has long been studied as a prototypical strongly correlated material. The difficulty in obtaining clean, well ordered surfaces, however, hindered the use of surface sensitive techniques to study its electronic structure. Here we…

A series of manganites Tb1-xHoxMnO3 (0<=x<=0.6) with orthorhombic structure are synthesized and detailed investigations on their multiferroicity are performed. Successive magnetic transitions upon temperature variation are evidenced for all…

Strongly Correlated Electrons · Physics 2010-04-19 C. L. Lu , S. Dong , K. F. Wang , J. -M. Liu