A Ge pixel array detector (PAD) with 100 segments was used in fluorescence x-ray absorption spectroscopy (XAS) study, probing local structure of high temperature superconducting thin film single crystals. Independent monitoring of individual pixel outputs allows real-time inspection of interference of substrates which has long been a major source of systematic error. By optimizing grazing-incidence angle and azimuthal orientation, smooth extended x-ray absorption fine structure (EXAFS) oscillations were obtained, demonstrating that strain effects can be studied using high-quality data for thin film single crystals grown by molecular beam epitaxy (MBE). The results of (La,Sr) 2CuO4 thin film single crystals under strain are related to the strain dependence of the critical temperature of superconductivity. © 2007 American Institute of Physics.
Fluorescence XAS using Ge PAD: Application to high-temperature superconducting thin film single crystals / H., Oyanagi; A., Tsukada; M., Naito; Saini, Naurang Lal; C., Zhang. - 882:(2007), pp. 899-901. (Intervento presentato al convegno X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference tenutosi a Stanford, CA nel 9 July 2006 through 14 July 2006) [10.1063/1.2644698].
Fluorescence XAS using Ge PAD: Application to high-temperature superconducting thin film single crystals
SAINI, Naurang Lal;
2007
Abstract
A Ge pixel array detector (PAD) with 100 segments was used in fluorescence x-ray absorption spectroscopy (XAS) study, probing local structure of high temperature superconducting thin film single crystals. Independent monitoring of individual pixel outputs allows real-time inspection of interference of substrates which has long been a major source of systematic error. By optimizing grazing-incidence angle and azimuthal orientation, smooth extended x-ray absorption fine structure (EXAFS) oscillations were obtained, demonstrating that strain effects can be studied using high-quality data for thin film single crystals grown by molecular beam epitaxy (MBE). The results of (La,Sr) 2CuO4 thin film single crystals under strain are related to the strain dependence of the critical temperature of superconductivity. © 2007 American Institute of Physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
