Multiple double-exchange mechanism by Mn2+ doping in manganite compounds

@article{ ISI:000284527000005,
Author = {Orgiani, P. and Galdi, A. and Aruta, C. and Cataudella, V. and De
   Filippis, G. and Perroni, C. A. and Ramaglia, V. Marigliano and Ciancio,
   R. and Brookes, N. B. and Moretti Sala, M. and Ghiringhelli, G. and
   Maritato, L.},
Title = {{Multiple double-exchange mechanism by Mn2+ doping in manganite compounds}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2010}},
Volume = {{82}},
Number = {{20}},
Month = {{NOV 23}},
Abstract = {{Double-exchange (DE) mechanisms in RE(1-x)AE(x)MnO(3) manganites (where
   RE is a trivalent rare-earth ion and AE is a divalent alkali-earth ion)
   relies on the strong exchange interaction between two Mn3+ and Mn4+ ions
   through interfiling oxygen 2p states. Nevertheless, the role of RE and
   AE ions has ever been considered ``silent{''} with respect to the DE
   conducting mechanisms. Here we show that a new path for DE mechanism is
   indeed possible by partially replacing the RE-AE elements by Mn2+ ions,
   in La-deficient LaxMnO3-delta thin films. X-ray absorption spectroscopy
   demonstrated the relevant presence of Mn2+ ions, which is unambiguously
   proved to be substituted at La site by resonant inelastic x-ray
   scattering. Mn2+ is proved to be directly correlated with the enhanced
   magnetotransport properties because of an additional hopping mechanism
   trough interfiling Mn2+ ions. Such a scenario has been theoretically
   confirmed by calculations within the effective single-band model. The
   use of Mn2+ both as a doping element and an ion electronically involved
   in the conduction mechanism reveals an unconventional phenomenon in
   transport properties of manganites. More important, such a strategy
   might be also pursed in other strongly correlated materials.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Orgiani, P (Corresponding Author), CNR SPIN, I-84084 Fisciano, SA, Italy.
   Orgiani, P.; Galdi, A.; Maritato, L., CNR SPIN, I-84084 Fisciano, SA, Italy.
   Orgiani, P.; Maritato, L., Univ Salerno, Dept Math & Informat, I-84084 Fisciano, SA, Italy.
   Galdi, A., Univ Salerno, Dept Phys, I-84084 Fisciano, SA, Italy.
   Aruta, C.; Cataudella, V.; De Filippis, G.; Perroni, C. A.; Ramaglia, V. Marigliano, CNR SPIN, I-80126 Naples, Italy.
   Aruta, C.; Cataudella, V.; De Filippis, G.; Perroni, C. A.; Ramaglia, V. Marigliano, Univ Naples Federico II, Dept Phys, I-80126 Naples, Italy.
   Ciancio, R., CNR IOM, TASC Lab, I-34149 Trieste, Italy.
   Brookes, N. B., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Moretti Sala, M.; Ghiringhelli, G., CNR SPIN, I-20133 Milan, Italy.
   Moretti Sala, M.; Ghiringhelli, G., Politecn Milan, Dept Phys, I-20133 Milan, Italy.}},
DOI = {{10.1103/PhysRevB.82.205122}},
Article-Number = {{205122}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
Author-Email = {{pasquale.orgiani@spin.cnr.it}},
ResearcherID-Numbers = {{Aruta, Carmela/L-2957-2015
   Sala, Marco Moretti/H-1034-2014
   Orgiani, Pasquale/E-7146-2013
   Cataudella, Vittorio/B-4164-2015
   Orgiani, Pasquale/AAC-8703-2019
   Galdi, Alice/J-5072-2012
   Ghiringhelli, Giacomo/D-1159-2014
   Ciancio, Regina/R-8845-2016
   Brookes, Nicholas B/C-6718-2019
   Moretti, Marco/AAF-9255-2019
   }},
ORCID-Numbers = {{Aruta, Carmela/0000-0002-6917-6667
   Sala, Marco Moretti/0000-0002-9744-9976
   Orgiani, Pasquale/0000-0002-1082-9651
   Cataudella, Vittorio/0000-0002-1835-1429
   Orgiani, Pasquale/0000-0002-1082-9651
   Galdi, Alice/0000-0003-2863-5393
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Brookes, Nicholas B/0000-0002-1342-9530
   Moretti, Marco/0000-0002-9744-9976
   DE FILIPPIS, Giulio/0000-0003-0557-3556}},
Funding-Acknowledgement = {{European CommunityEuropean Community (EC) {[}212348 NFFA]}},
Funding-Text = {{R.C.'s research activity has received funding from the European
   Community's Seventh Framework Programme 2007-2011 under grant Agreement
   No. 212348 NFFA.}},
Number-of-Cited-References = {{33}},
Times-Cited = {{22}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{29}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{684DG}},
Unique-ID = {{ISI:000284527000005}},
DA = {{2020-12-22}},
}