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SrRuO based heterostructures grown by pulsed laser deposition

  • M. Angeloni
  • C. Aruta
  • G. Balestrino
  • P. Orgiani
  • A. Tebano
  • P.G. Medaglia

Abstract:

In this report we demonstrate that high quality epitaxial heterostructures, based on metallic SrRuO3 and insulating SrTiO3 individual blocks a few unit cells thick, can be grown in a purely 2D, layer-by-layer mode, using pulsed laser deposition with in situ reflection high energy electron diffraction (RHEED) diagnostics. The thickness of each constituent block can be controlled at the level of a single unit cell. A detailed investigation carried out at the synchrotron facility, ESRF, by various X-ray techniques has demonstrated that each intensity oscillation of the RHEED specular spot corresponds strictly to the growth of a single perovskite unit cell, either SrRuO3 or SrTiO3. Furthermore, we show that, in these structures, the interfaces between the different constituent blocks are very sharp with a roughness of only one unit cell.

PACS. 81.15.Fg Laser deposition – 61.10.Kw X-ray reflectometry (surfaces, interfaces, films) – 68.55.Ac Nucleation and growth: microscopic aspects 

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Copyright information

© EDP Sciences, Springer-Verlag 2002

Authors and Affiliations

  • M. Angeloni
    • 1
  • C. Aruta
    • 1
  • G. Balestrino
    • 1
  • P. Orgiani
    • 1
  • A. Tebano
    • 1
  • P.G. Medaglia
    • 1
  1. 1.INFM Coherentia - Dipartimento di Ingegneria Meccanica, Università di Roma “Tor Vergata”, Via del Politecnico 1, 00133 Roma, ItalyIT

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