Metal-Insulator Transition and Its Relation to Magnetic Structure in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mi>LaMnO</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mrow><mml:mn>2</mml:mn><mml:mi>n</mml:mi></mml:mrow></mml:msub><mml:mo>/</mml:mo><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mi>SrMnO</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mo stretchy="false">)</mml:mo><

Bhattacharya, Anand; May, Steven J.; Velthuis, S. G. E. te; Warusawithana, Maitri; Zhai, Xiaofang; Jiang, Bin; Zuo, Jian‐Min; Fitzsimmons, M. R.; Bader, S. D.; Eckstein, J. N.

doi:10.1103/physrevlett.100.257203

Cited by 215 publications

(146 citation statements)

References 27 publications

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“…6,12,13,14 However, the magnetization ( M  ) induced at a single interface is often too small to be detected by conventional tools and it is hard to characterize the cross-coupling of M  with electric polarization ( P  ), such as magneto-electric effects. One of the neat ways to amplify the effect is making superlattices to multiply the signal.…”

Section: Magneto-electric Coupling In Tricolor Superlatticesmentioning

confidence: 99%

Emergent phenomena at oxide interfaces

et al. 2012

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BASIC NOTIONSTransition metal oxides (TMOs) are an ideal arena for the study of electronic correlations because the s-electrons of the transition metal ions are removed and transferred to oxygen ions, and hence the strongly correlated d-electrons determine their physical properties such as electrical transport, magnetism, optical response, thermal conductivity, and superconductivity. These electron correlations prohibit the double occupancy of metal sites and induce a local entanglement of charge, spin, and orbital degrees of freedom. This gives rise to a variety of phenomena, e.g., Mott insulators, various charge/spin/orbital orderings, metal-insulator transitions, multiferroics, and superconductivity. 1 In recent years, there has been a burst of activity to manipulate these phenomena, as well as create new ones, using oxide heterostructures. 2 Most fundamental to understanding the physical properties of TMOs is the concept of symmetry of the order parameter. As Landau recognized, the essence of phase transitions is the change of the symmetry. For example, ferromagnetic ordering breaks the rotational symmetry in spin space, i.e., the ordered phase has lower symmetry than the Hamiltonian of the system. There are three most important symmetries to be considered here. (i) Spatial inversion (I), defined as r  -r. In the case of an insulator, breaking this symmetry can lead to spontaneous electric SLAC-PUB-14626 SIMES,

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Section: Magneto-electric Coupling In Tricolor Superlatticesmentioning

confidence: 99%

Emergent phenomena at oxide interfaces

et al. 2012

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“…(1), the region with charge dropping involves 4 − 5 planes between the two blocks. We notice that the local charge density for (LM O) 16 /(SM O) 8 and (LM O) 32 /(SM O) 16 systems are very similar around the interface. Furthermore, the numerical results show close values of variational free energy corresponding to above mentioned systems.…”

Section: Static Properties and Phase Diagramsmentioning

confidence: 66%

“…5 we report the density of state of the system (LM O) 16 /(SM O) 8 . It has been calculated measuring the energy to the chemical potential µ.…”

Section: Spectral Propertiesmentioning

confidence: 99%

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Electron-lattice and strain effects in manganite heterostructures: The case of a single interface

Iorio¹,

Perroni²,

Ramaglia³

et al. 2011

Phys. Rev. B

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A correlated inhomogeneous mean-field approach is proposed in order to study a tight-binding model of the manganite heterostructures (LaM nO3)2n/(SrM nO3)n with average hole doping x = 1/3. Phase diagrams, spectral and optical properties of large heterostructures (up to 48 sites along the growth direction) with a single interface are discussed analyzing the effects of electron-lattice anti-adiabatic fluctuations and strain. The formation of a metallic ferromagnetic interface is quite robust with varying the strength of electron-lattice coupling and strain, though the size of the interface region is strongly dependent on these interactions. The density of states never vanishes at the chemical potential due to the formation of the interface, but it shows a rapid suppression with increasing the electron-lattice coupling. The in-plane and out-of-plane optical conductivities show sharp differences since the in-plane response has metallic features, while the out-of-plane one is characterized by a transfer of spectral weight to high frequency. The in-plane response mainly comes from the region between the two insulating blocks, so that it provides a clear signature of the formation of the metallic ferromagnetic interface.

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“…electrical transport. Several studies have presented results on the properties of (LMO) 2n /(SMO) n superlattices, which have an identical La/Sr ratio with respect to LSMO [60][61][62]. A decrease of the residual resistivity, with respect to the solid solution, was observed for the n = 1 superlattice [62].…”

Section: Order and Disorder At The Interfacementioning

confidence: 99%

Perovskite oxide heteroepitaxy

Boschker

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Metal-Insulator Transition and Its Relation to Magnetic Structure in(LaMnO3)2n/(SrMnO3)<

Cited by 215 publications

References 27 publications

Emergent phenomena at oxide interfaces

Emergent phenomena at oxide interfaces

Electron-lattice and strain effects in manganite heterostructures: The case of a single interface

Perovskite oxide heteroepitaxy

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