The pulsed laser deposition of SrTiO3 /LaGaO3 and SrTiO3 /LaAlO3 interfaces is analyzed with a focus on the kinetic energy of the ablated species. LaGaO3 and LaAlO3 plasma plumes were studied by fast photography and space-resolved optical emission spectroscopy. Reflection high energy electron diffraction was performed proving a layer-by-layer growth up to 10−1 mbar oxygen pressure. The role of the energetic plasma plume on the two-dimensional growth and on the presence of interfacial defects at different oxygen growth pressures is discussed in connection with the conducting properties of the polar/nonpolar interfaces.
Pulsed laser deposition of SrTiO3 /LaGaO3 and SrTiO3 /LaAlO3: Plasma plume effects / C., Aruta; Amoruso, Salvatore; Bruzzese, Riccardo; X., Wang; D., Maccariello; F., Miletto Granozio; SCOTTI DI UCCIO, Umberto. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - STAMPA. - 97:(2010), pp. 252105-1-252105-3. [10.1063/1.3529487]
Pulsed laser deposition of SrTiO3 /LaGaO3 and SrTiO3 /LaAlO3: Plasma plume effects
AMORUSO, SALVATORE;BRUZZESE, RICCARDO;SCOTTI DI UCCIO, UMBERTO
2010
Abstract
The pulsed laser deposition of SrTiO3 /LaGaO3 and SrTiO3 /LaAlO3 interfaces is analyzed with a focus on the kinetic energy of the ablated species. LaGaO3 and LaAlO3 plasma plumes were studied by fast photography and space-resolved optical emission spectroscopy. Reflection high energy electron diffraction was performed proving a layer-by-layer growth up to 10−1 mbar oxygen pressure. The role of the energetic plasma plume on the two-dimensional growth and on the presence of interfacial defects at different oxygen growth pressures is discussed in connection with the conducting properties of the polar/nonpolar interfaces.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
