Critical influence of target-to-substrate distance on conductive properties of LaGaO3/SrTiO3 interfaces deposited at 10-1 mbar oxygen pressure

Autor:	Aruta, Carmela, Amoruso, Salvarore, Ausanio, Giovanni, Bruzzese, Riccardo, Di Gennaro, Emiliano, Lanzano, Marco, Granozio, Fabio Miletto, Riaz, Muhammad, Sambri, Alessia, di Uccio, Umberto Scotti, Wang, Xuan
Rok vydání:	2012
Předmět:	Condensed Matter - Materials Science Condensed Matter - Strongly Correlated Electrons
Zdroj:	Applied Physics Letters 101, 031602 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4737650
Popis:	We investigate pulsed laser deposition of LaGaO3/SrTiO3 at 10-1 mbar oxygen background pressure, demonstrating the critical effect of the target-to-substrate distance, dTS, on the interface sheet resistance, Rs. The interface turns from insulating to metallic by progressively decreasing dTS. The analysis of the LaGaO3 plume evidences the important role of the plume propagation dynamics on the interface properties. These results demonstrate the growth of conducting interfaces at an oxygen pressure of 10-1 mbar, an experimental condition where a well-oxygenated heterostructures with a reduced content of oxygen defects is expected. Comment: 16 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1201.0454 Zobrazit plný text záznamu View this record from Arxiv