by Aruta, C., Ghiringhelli, G., Dallera, C., Fracassi, F. and Medaglia, P. G., Tebano, A., Brookes, N. B. and Braicovich, L. and Balestrino, G.
Abstract:
With the aim of disentangling the role of the constituent blocks in the high-T-c cuprate superconductors we have measured x-ray absorption spectra at the Cu L-3 edge on (Cu1-delta C delta)Ba-2 CuOx (BCO), CaCuO2 (CCO), and BCO/CCO superconducting superlattices obtained by stacking in a sequence the two blocks. By observing the polarization dependence we could discriminate between the in-plane and out-of-plane hole densities. The results strongly indicate that charge is redistributed across the interfaces from the BCO charge reservoir block to the CCO infinite layer block. In the superconducting samples a relatively high density of out-of-plane holes is still present, whereas when the CCO layer thickness is excessive the holes appear to have preferential in-plane orientation and superconductivity is suppressed.
Reference:
Hole redistribution across interfaces in superconducting cuprate superlattices (Aruta, C., Ghiringhelli, G., Dallera, C., Fracassi, F. and Medaglia, P. G., Tebano, A., Brookes, N. B. and Braicovich, L. and Balestrino, G.), In PHYSICAL REVIEW B, AMER PHYSICAL SOC, volume 78, 2008.
Bibtex Entry:
@article{ ISI:000261215400033,
Author = {Aruta, C. and Ghiringhelli, G. and Dallera, C. and Fracassi, F. and
   Medaglia, P. G. and Tebano, A. and Brookes, N. B. and Braicovich, L. and
   Balestrino, G.},
Title = {{Hole redistribution across interfaces in superconducting cuprate
   superlattices}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2008}},
Volume = {{78}},
Number = {{20}},
Month = {{NOV}},
Abstract = {{With the aim of disentangling the role of the constituent blocks in the
   high-T-c cuprate superconductors we have measured x-ray absorption
   spectra at the Cu L-3 edge on (Cu1-delta C delta)Ba-2 CuOx (BCO), CaCuO2
   (CCO), and BCO/CCO superconducting superlattices obtained by stacking in
   a sequence the two blocks. By observing the polarization dependence we
   could discriminate between the in-plane and out-of-plane hole densities.
   The results strongly indicate that charge is redistributed across the
   interfaces from the BCO charge reservoir block to the CCO infinite layer
   block. In the superconducting samples a relatively high density of
   out-of-plane holes is still present, whereas when the CCO layer
   thickness is excessive the holes appear to have preferential in-plane
   orientation and superconductivity is suppressed.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Aruta, C (Corresponding Author), Univ Naples Federico II, Dipartimento Sci Fisiche, CNR INFM Coherentia, Complesso Monte S Angelo,Via Cinthia, I-80126 Naples, Italy.
   Aruta, C., Univ Naples Federico II, Dipartimento Sci Fisiche, CNR INFM Coherentia, I-80126 Naples, Italy.
   Ghiringhelli, G., Politecn Milan, Dipartimento Fis, CNR INFM Coherentia, I-20133 Milan, Italy.
   Ghiringhelli, G.; Fracassi, F.; Braicovich, L., Politecn Milan, Dipartimento Fis, CNR INFM Soft, I-20133 Milan, Italy.
   Dallera, C., Politecn Milan, Dipartimento Fis, CNR INFM Ultras, I-20133 Milan, Italy.
   Medaglia, P. G.; Tebano, A.; Balestrino, G., Univ Roma Tor Vergata, Dipartimento Matemat, Dipartimento Ingn Meccan, CNR INFM Coherentia, I-00133 Rome, Italy.
   Brookes, N. B., European Synchrotron Radiat Facil, F-38043 Grenoble, France.}},
DOI = {{10.1103/PhysRevB.78.205120}},
Article-Number = {{205120}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{X-RAY-ABSORPTION; ELECTRONIC-STRUCTURE; CU; SPECTROSCOPY; SERIES}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
Author-Email = {{aruta@na.infn.it}},
ResearcherID-Numbers = {{Ghiringhelli, Giacomo/D-1159-2014
   Aruta, Carmela/L-2957-2015
   Brookes, Nicholas B/C-6718-2019
   }},
ORCID-Numbers = {{Ghiringhelli, Giacomo/0000-0003-0867-7748
   Aruta, Carmela/0000-0002-6917-6667
   Brookes, Nicholas B/0000-0002-1342-9530
   Braicovich, Lucio/0000-0001-6548-9140
   TEBANO, ANTONELLO/0000-0002-0229-671X}},
Funding-Acknowledgement = {{Elettronica Masel s. r. l.}},
Funding-Text = {{We thank ettronica Masel s. r. l. for a partial financial support.}},
Number-of-Cited-References = {{30}},
Times-Cited = {{23}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{18}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{376XD}},
Unique-ID = {{ISI:000261215400033}},
DA = {{2020-12-22}},
}

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