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 the subject of intense research at present. However, the non-local nature of the interactions between valence electrons and lattice ions, often compounded by a plethora of vibrational modes, presents 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 YBa2Cu3O7 (YBCO) and the colossal-magnetoresistance compound La2/3Ca1/3MnO3 that suggests a new approach to this problem. We find that a rotational mode of the MnO6 octahedra in La2/3Ca1/3MnO3 experiences pronounced superconductivity-induced line-shape anomalies, which scale linearly with the thickness of the YBCO layers over a remarkably long range of several tens of nanometres. 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.
This is a preview of subscription content
Subscribe to Journal
Get full journal access for 1 year
only $8.25 per issue
All prices are NET prices.
VAT will be added later in the checkout.
Tax calculation will be finalised during checkout.
Get time limited or full article access on ReadCube.
All prices are NET prices.
Mannhart, J. & Schlom, D. G. Oxide interfaces—an opportunity for electronics. Science 327, 1607–1611 (2010).
Hwang, H. Y. et al. Emergent phenomena at oxide interfaces. Nature Mater. 11, 103–113 (2012).
Pentcheva, R. & Pickett, W. E. Avoiding the polarization catastrophe in LaAlO3 overlayers on SrTiO3(001) through polar distortion. Phys. Rev. Lett. 102, 107602 (2009).
Pauli, S. A. et al. Evolution of the interfacial structure of LaAlO3 on SrTiO3 . Phys. Rev. Lett. 106, 036101 (2011).
Butko, V. Y., Logvenov, G., Bozovic, N., Radovic, Z. & Bozovic, I. Madelung strain in cuprate superconductors—a route to enhancement of the critical temperature. Adv. Mater. 21, 3644–3648 (2009).
Hoppler, J. et al. Giant superconductivity-induced modulation of the ferromagnetic magnetization in a cuprate–manganite superlattice. Nature Mater. 8, 315–319 (2009).
Edwards, D. M. Ferromagnetism and electron–phonon coupling in the manganites. Adv. Phys. 51, 1259–1318 (2002).
Dagotto, E., Hotta, T. & Moreo, A. Colossal magnetoresistant materials: The key role of phase separation. Phys. Rep. 344, 1–153 (2001).
Gunnarsson, O. & Rösch, O. Interplay between electron–phonon and Coulomb interactions in cuprates. J. Phys. Condens. Matter 20, 043201 (2008).
Sefrioui, Z. et al. Ferromagnetic/superconducting proximity effect in La0.7Ca0.3MnO3/YBa2Cu3O7−δ superlattices. Phys. Rev. B 67, 214511 (2003).
Holden, T. et al. Proximity induced metal–insulator transition in YBa2Cu3O7/La2/3Ca1/3MnO3 superlattices. Phys. Rev. B 69, 064505 (2004).
Soltan, S., Albrecht, J. & Habermeier, H-U. Ferromagnetic/superconducting bilayer structure: A model system for spin diffusion length estimation. Phys. Rev. B 70, 144517 (2004).
Peña, V. et al. Coupling of superconductors through a half-metallic ferromagnet: Evidence for a long-range proximity effect. Phys. Rev. B 69, 224502 (2004).
Chakhalian, J. et al. Magnetism at the interface between ferromagnetic and superconducting oxides. Nature Phys. 2, 244–248 (2006).
Hoffmann, A. et al. Suppressed magnetization in La0.7Ca0.3MnO3/YBa2Cu3O7−δ superlattices. Phys. Rev. B 72, 140407 (2005).
Stahn, J. et al. Magnetic proximity effect in perovskite superconductor/ferromagnet multilayers. Phys. Rev. B 71, 140509 (2005).
Chakhalian, J. et al. Orbital reconstruction and covalent bonding at an oxide interface. Science 318, 1114–1117 (2007).
Wu, T. et al. Magnetic-field-induced charge-stripe order in the high-temperature superconductor YBa2Cu3Oy . Nature 477, 191–194 (2011).
Raichle, M. et al. Highly anisotropic anomaly in the dispersion of the copper–oxygen bond-bending phonon in superconducting YBa2Cu3O7 from inelastic neutron scattering. Phys. Rev. Lett. 107, 177004 (2011).
Rivadulla, F. et al. Suppression of ferromagnetic double exchange by vibronic phase segregation. Phys. Rev. Lett. 96, 016402 (2006).
Salamon, M. B. & Jaime, M. The physics of manganites: Structure and transport. Rev. Mod. Phys. 73, 583–628 (2001).
Irwin, J. C., Chrzanowski, J. & Franck, J. P. Oxygen isotope effect on the vibrational modes of La1−xCaxMnO3 . Phys. Rev. B 59, 9362–9371 (1999).
Thomsen, C. et al. Systematic Raman and infrared studies of the superconductor YBa2Cu3O7−x as a function of oxygen concentration (0 ≤ x ≤ 1). Solid State Commun. 65, 55–58 (1988).
Altendorf, E. et al. Temperature dependences of the 340-, 440-, and 500-cm−1 Raman modes of YBa2Cu3Oy for 6.7 < y < 7.0. Phys. Rev. B 47, 8140–8150 (1993).
Klein, M. V. in Light Scattering in Solids I (ed. Cardona, M.) (Springer, 1983).
Friedl, B., Thomsen, C. & Cardona, M. Determination of the superconducting gap in RBa2Cu3O7−δ . Phys. Rev. Lett. 65, 915–918 (1990).
Bakr, M. et al. Electronic and phononic Raman scattering in detwinned YBa2Cu3O6.95 and Y0.85Ca0.15Ba2Cu3O6.95: s-wave admixture to the d x 2 − y 2 -wave order parameter. Phys. Rev. B 80, 064505 (2009).
Dai, P. et al. Experimental evidence for the dynamic Jahn–Teller effect in La0.65Ca0.35MnO3 . Phys. Rev. B 54, R3694–R3697 (1996).
Granado, E. et al. Phonon Raman scattering in R1−xAxMnO3+δ (R = La,Pr;A = Ca,Sr). Phys. Rev. B 58, 11435–11440 (1998).
Liarokapis, E. et al. Local lattice distortions and Raman spectra in the La1−xCaxMnO3 system. Phys. Rev. B 60, 12758–12763 (1999).
Antonakos, A., Liarokapis, E., Aydogdu, G. H. & Habermeier, H-U. Strain effects on La0.5Ca0.5MnO3 thin films. Mater. Sci. Eng. B 144, 83–88 (2007).
Granado, E. et al. Magnetic ordering effects in the Raman spectra of La1−xMn1−xO3 . Phys. Rev. B 60, 11879–11882 (1999).
Laverdiere, J. et al. Spin–phonon coupling in orthorhombic RMnO3 (R = Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y): A Raman study. Phys. Rev. B 73, 214301 (2006).
Issing, S. et al. Composition-dependent spin–phonon coupling in mixed crystals of the multiferroic manganite Eu1−xYxMnO3 (0 ≤ x ≤ 0.5) studied by Raman spectroscopy. Phys. Rev. B 81, 024304 (2010).
Takazawa, A. et al. Investigation of phonon anomaly in the orbital order state of La1−xSrxMnO3 (x~1/8). J. Phys. Soc. Jpn 70, 902–910 (2001).
Litvinchuk, A. P., Thomsen, C., Trofimov, I. E., Habermeier, H-U. & Cardona, M. Raman study of YBa2Cu3O7−δ − PrBa2Cu3O7−δ superlattices. Phys. Rev. B 46, 14017–14021 (1992).
Ham, K-M. et al. Raman-active phonons in thin a- and c-axis-oriented (YBa2Cu3O7)m − (PrBa2Cu3O7)n superlattices. Phys. Rev. B 50, 16598–16605 (1994).
Bohnen, K-P., Heid, R. & Krauss, M. Phonon dispersion and electron–phonon interaction for YBa2Cu3O7 from first-principles calculations. Europhys. Lett. 64, 104–110 (2003).
Heid, R., Zeyher, R., Manske, D. & Bohnen, K-P. Phonon-induced pairing interaction in YBa2Cu3O7 within the local-density approximation. Phys. Rev. B 80, 024507 (2009).
Part of this research project has been supported by the European Commission under the 7th Framework Programme Marie Curie action SOPRANO project (Grant No. PITNGA-2008-214040), and by the German Science Foundation under SFB/TRR 80. We are grateful to A. Frano and P. Wochner for discussions and technical assistance.
The authors declare no competing financial interests.
About this article
Cite this article
Driza, N., Blanco-Canosa, S., Bakr, M. et al. Long-range transfer of electron–phonon coupling in oxide superlattices. Nature Mater 11, 675–681 (2012). https://doi.org/10.1038/nmat3378
Nature Communications (2021)
Nature Communications (2018)
Morphological transformations induced by Co impurity in ZnO nanostructures prepared by rf-sputtering and their physical properties
Journal of Materials Science: Materials in Electronics (2018)
Nature Communications (2017)