Long-range transfer of electron-phonon coupling in oxide superlattices

Abstract

The electron-phonon interaction is of central importance for the electrical and thermal properties of solids, and its influence on superconductivity, colossal magnetoresistance, and other many-body phenomena in correlated-electron materials is currently the subject of intense research. However, the non-local nature of the interactions between valence electrons and lattice ions, often compounded by a plethora of vibrational modes, present formidable challenges for attempts to experimentally control and theoretically describe the physical properties of complex materials. Here we report a Raman scattering study of the lattice dynamics in superlattices of the high-temperature superconductor $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_7$ and the colossal-magnetoresistance compound $\mathbf{L}{\mathbf{a}}_{2/3}\mathbf{C}{\mathbf{a}}_{1/3}\mathbf{Mn}{\mathbf{O}}_3$ that suggests a new approach to this problem. We find that a rotational mode of the MnO${}_6$ octahedra in $\mathbf{L}{\mathbf{a}}_{2/3}\mathbf{C}{\mathbf{a}}_{1/3}\mathbf{Mn}{\mathbf{O}}_3$ experiences pronounced superconductivity-induced lineshape anomalies, which scale linearly with the thickness of the $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_7$ layers over a remarkably long range of several tens of nanometers. The transfer of the electron-phonon coupling between superlattice layers can be understood as a consequence of long-range Coulomb forces in conjunction with an orbital reconstruction at the interface. The superlattice geometry thus provides new opportunities for controlled modification of the electron-phonon interaction in complex materials.

13 pages, 4 figures. Revised version to be published in Nature Materials

References in corpus (16)

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• Magnetic-field-induced charge-stripe order in the high temperature superconductor YBa2Cu3Oy
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• Ferromagnetism and electron-phonon coupling in the manganites
• Magnetic Proximity Effect in Perovskite Superconductor/Ferromagnet Multilayers
• Evolution of the interfacial structure of LaAlO3 on SrTiO3
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• Ferromagnetic/superconducting bilayer structure: A model system for spin diffusion length estimation
• Interplay between electron-phonon and Coulomb interactions in cuprates
• Suppressed magnetization in La${}_{0.7}$Ca${}_{0.3}$MnO${}_3$/YBa${}_2$Cu${}_3$O${}_{7-\delta }$ superlattices
• Highly anisotropic anomaly in the dispersion of the copper-oxygen bond-bending phonon in superconducting YBa2Cu3O7 from inelastic neutron scattering
• Suppression of Ferromagnetic Double Exchange by Vibronic Phase Segregation
• Electronic and phononic Raman scattering in detwinned YBa${}_2$Cu${}_3$O${}_{6.95}$ and Y${}_{0.85}$Ca${}_{0.15}$Ba${}_2$Cu${}_3$O${}_{6.95}$: s-wave admixture to the $d_{x^2-y^2}$-wave order parameter
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Cited by in corpus (22)

• Emergent properties hidden in plane view: Strong electronic correlations at oxide interfaces
• Normal Mode Determination of Perovskite Crystal Structures with Octahedral Rotations: Theory and Applications
• Charge ordering in superconducting copper oxides
• Phonon collapse and van der Waals melting of the 3D charge density wave of VSe${}_2$
• Long-range charge density wave proximity effect at cuprate-manganate interfaces
• Self-doping processes between planes and chains in the metal-to-superconductor transition of YBa2Cu3O6.9
• Stabilization of three-dimensional charge order in YBa${}_2$Cu${}_3$O${}_{6+x}$ via epitaxial growth
• Discontinuous polaron transition in a two-band model
• Element-Specific Depth Profile of Magnetism and Stoichiometry at the La0.67Sr0.33MnO3/BiFeO3 Interface
• Ground state and spectral properties of the doped one-dimensional optical Hubbard-Su-Schrieffer-Heeger model
• Observation of a Three-Dimensional Quasi-Long-Range Electronic Supermodulation in YBa2Cu3O7-x/La0.7Ca0.3MnO3 Heterostructures
• Raman spectroscopy study of the interface structure in (CaCuO2)n/(SrTiO3)m superlattices
• Thermoelectric Properties of YBa2Cu3O7-(La,Ca)MnO3 Superlattices
• Backfolded acoustic phonons in metal-oxide superlattices
• Homogeneous superconducting gap in DBCO synthesized by oxide molecular beam epitaxy
• Charge Density Wave Modulation in Superconducting BaPbO${}_3$/BaBiO${}_3$ Superlattices
• Electric field noise in a high-temperature superconducting surface ion trap
• $B_{1g}$ phonon anomaly driven by Fermi surface instability at intermediate temperature in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• Structural and electronic properties of epitaxial YBaCuO/LaCaMnO bilayers grown on SrTiO${}_3$ (110) substrates
• High-Temperature Superconductivity from Finite-Range Attractive Interaction
• Ferromagnetic exchange field stabilized antiferromagnetic ordering in a cuprate superconductor
• Thermal decoupling in high-$T_c$ cuprate superconductors