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Influence of La and Mn vacancies on the electronic and magnetic properties of LaMnO₃ thin films grown by pulsed laser deposition

Marozau, Ivan ; Das, Proloy T. ; Döbeli, Max ; Storey, James G. ; Uribe-Laverde, Miguel A. ; Das, Saikat ; Wang, Chennan ; Rössle, Matthias ; Bernhard, Christian

In: Physical Review B, 2014, vol. 89, no. 17, p. 174422

With pulsed laser deposition, we have grown c axis oriented thin films of the nominal composition LaMnO3 (LMO) on LSAT(001) substrates. We find that, depending on the oxygen background pressure during growth, the LMO films contain sizeable amounts of La and/or Mn vacancies that strongly influence their electronic and magnetic properties. Specifically, we show that the Mn/La ratio can be...