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Dimensionality control of electronic phase transitions in nickel-Oxide superlattices

  • Boris, A. V. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Matiks, Y. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Benckiser, E. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Frano, A. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Popovich, P. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Hinkov, V. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Wochner, P. Max-Planck-Institut für Metallforschung, Stuttgart, Germany
  • Castro-Colin, M. Max-Planck-Institut für Metallforschung, Stuttgart, Germany
  • Detemple, E. Max-Planck-Institut für Metallforschung, Stuttgart, Germany
  • Malik, Vivek Kumar Department of Physics, University of Fribourg and Fribourg Center for Nano Materials, Switzerland
  • Bernhard, Christian Department of Physics, University of Fribourg and Fribourg Center for Nano Materials, Switzerland
  • Prokscha, T. Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute (PSI), Villigen PSI, Switzerland
  • Suter, A. Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute (PSI), Villigen PSI, Switzerland
  • Salman, Z. Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute (PSI), Villigen PSI, Switzerland
  • Morenzoni, E. Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute (PSI), Villigen PSI, Switzerland
  • Cristiani, G. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Habermeier, H.-U. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
  • Keimer, B. Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
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    20.05.2011
Published in:
  • Science. - 2011, vol. 332, no. 6032, p. 937-940
English The competition between collective quantum phases in materials with strongly correlated electrons depends sensitively on the dimensionality of the electron system, which is difficult to control by standard solid-state chemistry. We have fabricated superlattices of the paramagnetic metal lanthanum nickelate (LaNiO₃) and the wide-gap insulator lanthanum aluminate (LaAlO₃) with atomically precise layer sequences. We used optical ellipsometry and low-energy muon spin rotation to show that superlattices with LaNiO₃ as thin as two unit cells undergo a sequence of collective metal-insulator and antiferromagnetic transitions as a function of decreasing temperature, whereas samples with thicker LaNiO₃ layers remain metallic and paramagnetic at all temperatures. Metal-oxide superlattices thus allow control of the dimensionality and collective phase behavior of correlated-electron systems.
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301969
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