Superconducting to insulating transition in Nd1.2Ba1.8Cu3O7+x thin films studied by polarized X-ray absorption spectroscopy

@article{ ISI:000249870600119,
Author = {Salluzzo, M. and Ghiringhelli, G. and Brookes, N. B. and De Luca, G. M.
   and Fracassi, F. and Vaglio, R.},
Title = {{Superconducting to insulating transition in Nd1.2Ba1.8Cu3O7+x thin films
   studied by polarized X-ray absorption spectroscopy}},
Journal = {{PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS}},
Year = {{2007}},
Volume = {{460}},
Number = {{2}},
Pages = {{971-972}},
Month = {{SEP 1}},
Note = {{8th International Conference on Materials and Mechanisms of
   Superconductivity and High Temperature Superconductors, Dresden,
   GERMANY, JUL 09-14, 2006}},
Abstract = {{We report a study of the superconducting-insulator (S-I) transition in
   epitaxial untwinned Nd1.2Ba1.8Cu3O7+x films using Cu-L and O-K edge
   polarized X-ray absorption spectroscopy (XAS). The S-I transition in
   realized by reducing the films thickness from 9 to 6 u.c. Due to strain,
   thin NdBCO films are characterized by structurally identical CuO2
   planes. The major differences in the XAS spectra are not associated to
   states within the CuO2 units in the ab-plane, but to the unoccupied
   3d(3z(2)-r(2)) states of copper at the Cu(1) and Cu(2) sites hybridized
   with the apical 2p(z) O(4) state, and to the unoccupied 2p(z) O(4)
   states themselves. The experimental results show that the S-I transition
   induced by change of thickness in Nd1.2Ba1.8Cu3O7+x films is correlated
   to holes localization at the copper sites of the Cu(1)O charge reservoir
   layer. The results open new perspectives for the interpretation of the
   superconducting to insulating transition in the HTS compounds. (c) 2007
   Elsevier B.V. All rights reserved.}},
Publisher = {{ELSEVIER SCIENCE BV}},
Address = {{PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}},
Type = {{Article; Proceedings Paper}},
Language = {{English}},
Affiliation = {{Salluzzo, M (Corresponding Author), Univ Naples Federico 2, CNR, INFM,COHERENTIA, Dipartimento Sci Fisiche, Piazza Leonardo da Vinci 32, Naples, Italy.
   Univ Naples Federico 2, CNR, INFM,COHERENTIA, Dipartimento Sci Fisiche, Naples, Italy.
   Politecn Milan, CNR, INFM,COHERENTIA, Dipartimento Fis, I-20133 Milan, Italy.
   European Synchrotron Res Facil, F-38043 Grenoble, France.
   Univ Salerno, CNR, INFM,COHERENTIA, Dipartimento Sci Fisiche, I-84081 Salerno, Italy.}},
DOI = {{10.1016/j.physc.2007.03.264}},
ISSN = {{0921-4534}},
Keywords = {{X-ray absorption spectroscopy; High critical temperature
   superconductors; Thin films}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Applied; Physics, Condensed Matter}},
Author-Email = {{salluzzo@na.infn.it}},
ResearcherID-Numbers = {{salluzzo, marco/C-5919-2009
   Ghiringhelli, Giacomo/D-1159-2014
   Brookes, Nicholas B/C-6718-2019}},
ORCID-Numbers = {{salluzzo, marco/0000-0001-8372-6963
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Brookes, Nicholas B/0000-0002-1342-9530}},
Number-of-Cited-References = {{4}},
Times-Cited = {{1}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{6}},
Journal-ISO = {{Physica C}},
Doc-Delivery-Number = {{216IB}},
Unique-ID = {{ISI:000249870600119}},
DA = {{2020-12-22}},
}