Electronic and vibrational signatures of ruthenium vacancies in Sr$_2$RuO$_4$ thin films

30 Sep 2019 Kim Gideok Suyolcu Y. Eren Herrero-Martin J. Putzky D. Nair H. P. Ruf J. P. Schreiber N. J. Dietl C. Christiani G. Logvenov G. Minola M. van Aken P. A. Shen K. M. Schlom D. G. Keimer B.

The synthesis of stoichiometric Sr$_2$RuO$_4$ thin films has been a challenge because of the high volatility of ruthenium oxide precursors, which gives rise to ruthenium vacancies in the films. Ru vacancies greatly affect the transport properties and electronic phase behavior of Sr$_2$RuO$_4$, but their direct detection is difficult due to their atomic dimensions and low concentration... (read more)

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  • SUPERCONDUCTIVITY
  • MATERIALS SCIENCE
  • STRONGLY CORRELATED ELECTRONS