Strain-induced phase separation in La0.7Sr0.3MnO3 thin films

@article{ ISI:000243195800031,
Author = {Tebano, A. and Aruta, C. and Medaglia, P. G. and Tozzi, F. and
   Balestrino, G. and Sidorenko, A. A. and Allodi, G. and De Renzi, R. and
   Ghiringhelli, G. and Dallera, C. and Braicovich, L. and Brookes, N. B.},
Title = {{Strain-induced phase separation in La0.7Sr0.3MnO3 thin films}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2006}},
Volume = {{74}},
Number = {{24}},
Month = {{DEC}},
Abstract = {{La0.7Sr0.3MnO3 thin films having different thicknesses were grown by
   pulsed laser deposition with in situ reflection high energy electron
   diffraction diagnostics on LaAlO3 substrates. The mismatch between film
   and substrate gives rise to an in-plane compressive biaxial strain,
   which partially relaxes in films thicker than 30 unit cells.
   Accordingly, the ratio between the out-of-plane and the in-plane lattice
   parameter (c/a) varies between 1.06 (fully strained) and 1.03 (partially
   relaxed). In-plane compressive strain favors the stabilization of the
   3z(2)-r(2) orbitals (chain-type antiferromagnetic phase), thus giving
   rise to a sizeable x-ray absorption linear dichroism signal. The shape
   of the linear dichroism depends weakly on the c/a ratio, while its
   intensity strongly increases with c/a. At the same time, the
   metal-insulator transition temperature shifts from about 360 K towards
   lower temperatures with decreasing thickness, eventually reaching an
   insulating state for the 30 unit cells film. Low-temperature nuclear
   magnetic resonance spectra show a decrease of the Mn-DE double-exchange
   metallic contribution with decreasing the thickness, which becomes
   negligible in the 30 unit cells thick film. The experimental results
   demonstrate a strain driven competition between two stable phases: the
   orbital ordered chain-type insulating antiferromagnetic and the orbital
   disordered metallic ferromagnetic. For intermediate values of the
   epitaxial strain the local minimum state of the system lies in a gap
   region between the two stable phases. Such a region has glassy
   characteristics with coexisting clusters of the two phases. The strain
   is used as a driving force to span the glassy region.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Tebano, A (Corresponding Author), Univ Roma Tor Vergata, CNR IN Coherentia, Via Politecn 1, I-00133 Rome, Italy.
   Univ Roma Tor Vergata, CNR IN Coherentia, I-00133 Rome, Italy.
   Univ Roma Tor Vergata, Dipartimento Ingn Meccan, I-00133 Rome, Italy.
   CNISM Parma, Dipartimento Fis, I-43100 Parma, Italy.
   Politecn Milan, Dipartimento Fis, CNR INFM Coherentia & Soft, I-20133 Milan, Italy.
   European Synchrotron Radiat Facil, F-38043 Grenoble, France.}},
DOI = {{10.1103/PhysRevB.74.245116}},
Article-Number = {{245116}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{MANGANITES; TRANSITION; DIAGRAM; STATE}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
Author-Email = {{carmela.aruta@uniroma2.it}},
ResearcherID-Numbers = {{Brookes, Nicholas B/C-6718-2019
   Sidorenko, Andrey/C-5135-2008
   Sidorenko, Andrey/AAV-5601-2020
   De Renzi, Roberto/F-9182-2011
   Aruta, Carmela/L-2957-2015
   Ghiringhelli, Giacomo/D-1159-2014
   }},
ORCID-Numbers = {{Brookes, Nicholas B/0000-0002-1342-9530
   Sidorenko, Andrey/0000-0002-6353-6721
   Sidorenko, Andrey/0000-0002-6353-6721
   De Renzi, Roberto/0000-0002-5015-0061
   Aruta, Carmela/0000-0002-6917-6667
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   TEBANO, ANTONELLO/0000-0002-0229-671X
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{29}},
Times-Cited = {{75}},
Usage-Count-Last-180-days = {{2}},
Usage-Count-Since-2013 = {{16}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{121ZP}},
Unique-ID = {{ISI:000243195800031}},
DA = {{2020-12-22}},
}