Eur. Phys. J. Appl. Phys.
Volume 70, Number 2, May 2015
|Number of page(s)||15|
|Section||Imaging, Microscopy and Spectroscopy|
|Published online||21 May 2015|
Photoelectron spectroscopy of transition metal oxide interfaces
Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot OX11 0DE, UK
a e-mail: firstname.lastname@example.org
Revised: 23 March 2015
Accepted: 14 April 2015
Published online: 21 May 2015
In the present paper we review applications of the photoelectron spectroscopy (PES) technique to the investigation of transition metal oxide (TMO) interfaces. We summarize very briefly some of the principle, specific characteristics of TMOs. Because of the buried nature of the interfaces, the photoelectrons must penetrate certain thicknesses of material, which is easier with higher kinetic energies in the keV range. Thus, we also briefly summarize some of the hallmarks of hard X-ray photoelectron spectroscopy (HAXPES), before presenting four explicit samples of the analysis of TMO interfaces: The LaAlO3/SrTiO3 (0 0 1) interface, which had attracted attention because of the discovery of a sheet of high mobility electrons below the thin layer of LaAlO3; superlattices of the two insulators CaCuO2 and SrTiO3, which can be prepared to become superconducting at about 40 K; epitaxial films of the 90 K superconductor GdBa2Cu3O7−δ on NdGaO3; and finally the analysis of the nucleation of the 90 K superconductor YBa2Cu3O7−δ on SrTiO3 (0 0 1). The latter two cases of the investigation of the superconducting films are examples of photoelectron spectroscopy by X-ray standing wave (XSW) excitation. Because of this, the bare essential features of the XSW technique are also briefly reviewed.
© EDP Sciences, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.