2024-03-28T11:03:47Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1782652020-03-17T13:44:39Zcom_10261_89com_10261_3col_10261_342
2019-03-21T11:56:50Z
urn:hdl:10261/178265
Beyond hard x-ray photoelectron spectroscopy: Simultaneous combination with x-ray diffraction
Rubio-Zuazo, J.
Castro, Germán R.
X-ray photoelectron spectroscopy
X-ray diffraction
Crystal lattices
Thin films
Electron kinetic energy
Surface optics
Epitaxy
X-ray reflectivity
Chemical elements
Metal oxides
Hard x-ray photoelectron spectroscopy (HAXPES) is a powerful and novel emerging technique for the nondestructive determination of electronic properties and chemical composition of bulk, buried interfaces and surfaces. It benefits from the exceptionally large escape depth of high kinetic energy photoelectrons, increasing the information depth up to several tens of nanometers. Complementing HAXPES with an atomic structure sensitive technique (such as x-ray diffraction) opens a new research field with major applications for materials science. At SpLine, the Spanish CRG beamline at the European Synchrotron Radiation Facility, we have developed a novel experimental set-up that combines HAXPES and x-ray diffraction (x-ray reflectivity, surface x-ray diffraction, grazing incidence x-ray diffraction, and reciprocal space maps). Both techniques can be operated simultaneously on the same sample and using the same excitation source. The set-up includes a robust 2S 3D diffractometer hosting a ultrahigh vacuum chamber equipped with a unique photoelectron spectrometer (few eV electron kinetic energy 15 keV), x-ray tube (Mg/Ti), 15 keV electron gun, and auxiliary standard surface facilities (molecular beam epitaxy evaporator, ion gun, low energy electron diffraction, sample heating/cooling system, leak valves, load-lock sample transfer, etc.). This end-station offers the unique possibility of performing simultaneous HAXPES x-ray diffraction studies. In the present work, we describe the experimental set-up together with two experimental examples that emphasize its outstanding capabilities: (i) nondestructive characterization of the Si/Ge and HfO/SiO interfaces on Ge-based CMOS devices, and (ii) strain study on LaCa MnO ultrathin films grown on SrTiO(001) substrate.
2019-03-21T11:56:50Z
2019-03-21T11:56:50Z
2013-04-29
2019-03-21T11:56:50Z
artículo
Journal of Vacuum Science and Technology A 31(3): (2013)
0734-2101
http://hdl.handle.net/10261/178265
10.1116/1.4801915
eng
https://doi.org/10.1116/1.4801915
Sí
closedAccess
American Institute of Physics