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Orbital Physics in Transition-Metal Oxides
Yoshinori Tokura,Naoto Nagaosa +1 more
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An overview is given here on this "orbital physics," which will be a key concept for the science and technology of correlated electrons.Abstract:
An electron in a solid, that is, bound to or nearly localized on the specific atomic site, has three attributes: charge, spin, and orbital. The orbital represents the shape of the electron cloud in solid. In transition-metal oxides with anisotropic-shaped d-orbital electrons, the Coulomb interaction between the electrons (strong electron correlation effect) is of importance for understanding their metal-insulator transitions and properties such as high-temperature superconductivity and colossal magnetoresistance. The orbital degree of freedom occasionally plays an important role in these phenomena, and its correlation and/or order-disorder transition causes a variety of phenomena through strong coupling with charge, spin, and lattice dynamics. An overview is given here on this "orbital physics," which will be a key concept for the science and technology of correlated electrons.read more
Citations
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Spin-orbit-lattice coupling and magnetostriction of strained La 0.7 Ca 0.3 MnO 3 films
Jaejung Song,J. H. Park,J. Y. Kim,Byeong-Gyu Park,Y. H. Jeong,Han-Jin Noh,Shinyoung Oh,Hong-Ji Lin,C. T. Chen +8 more
TL;DR: In this paper, the correlation of orbital and magnetic anisotropies in strained ferromagnetic films epitaxially grown on different substrates, using the magnetic circular dichroism at Mn absorption edges, was investigated.
Journal ArticleDOI
Stabilization of Sr3Al2O6 Growth Templates for Ex Situ Synthesis of Freestanding Crystalline Oxide Membranes.
Danfeng Li,Danfeng Li,Danfeng Li,Carolina Adamo,Bai Yang Wang,Hyeok Yoon,Zhuoyu Chen,Seung Sae Hong,Seung Sae Hong,Di Lu,Yi Cui,Yi Cui,Yasuyuki Hikita,Harold Y. Hwang,Harold Y. Hwang +14 more
TL;DR: In this paper, an ultrathin capping layer of SrTiO3 was used as a template for ex situ epitaxial growth of a water-soluble sacrificial layer.
Journal ArticleDOI
Multi-Bandgap Monolithic Metal Nanowire Percolation Network Sensor Integration by Reversible Selective Laser-Induced Redox
TL;DR: In this article , a reversible selective laser-induced redox (rSLIR) method was proposed to fabricate active electronic components in a monolithic seamless fashion where both metal and semiconductor can be prepared from the same monolith material without creating a semiconductor-metal interface.
Journal ArticleDOI
Strain-induced Curie temperature variation in La0.9Sr0.1MnO3 thin films
TL;DR: In this article, the structural, electrical and magnetic properties of La0.9Sr0.1MnO3 thin films were investigated, and a simplified equation for TC was derived to explain quantitatively the anomalous strain effect.
Journal ArticleDOI
Spin-orbit coupling and strong electronic correlations in cyclic molecules
TL;DR: In this paper, it was shown that for odd-fold symmetric molecules the maximum and minimum molecular orbital angular momentum states are time-reversal conjugates, whereas for even-fold asymmetric molecules they are aliases of the same single state.
References
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Journal ArticleDOI
Interaction between the d -Shells in the Transition Metals. II. Ferromagnetic Compounds of Manganese with Perovskite Structure
TL;DR: In this paper, it was shown that both electrical conduction and ferromagnetic coupling in these compounds arise from a double exchange process, and a quantitative relation was developed between electrical conductivity and the Ferromagnetic Curie temperature.
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Theory of the role of covalence in the perovskite-type manganites [La,M(II)]MnO3
TL;DR: In this article, the theory of double exchange was applied to perovskite-type manganites and detailed qualitative predictions about the magnetic lattice, the crystallographic lattice and the electrical resistivity were made.
Journal ArticleDOI
Stability of Polyatomic Molecules in Degenerate Electronic States. I. Orbital Degeneracy
H. A. Jahn,Edward Teller +1 more
TL;DR: In this paper, it was shown that if the total electronic state of orbital and spin motion is degenerate, then a non-linear configuration of the molecule will be unstable unless the degeneracy is the special twofold one (discussed by Kramers 1930) which can occur only when the molecule contains an odd number of electrons.
Journal ArticleDOI
Superexchange interaction and symmetry properties of electron orbitals
TL;DR: In this article, the sign of the superexchange interaction is closely connected with the symmetry of the electron orbitals and the cation orbital state when the cations are subject to the crystalline field arising from octahedral or tetrahedrally surrounding anions.