by Aruta, C, Ghiringhelli, G, Tebano, A, Boggio, NG, Brookes, NB, Medaglia, PG and Balestrino, G
Abstract:
Strain induced anisotropy in the electronic properties of La0.7Sr0.3MnO3 thin films was investigated by x-ray absorption spectroscopy at the Mn 2p and O 1s edges. Films on (100) SrTiO3 and (100) LaAlO3 substrates were grown by pulsed laser deposition with in situ reflection high energy electron diffraction diagnostic. At both absorption edges, clear features related to different anisotropic lattice strain effects as a function of the substrate were observed. On the average a negative (positive) linear dichroism was obtained for films grown under in-plane tensile (compressive) epitaxial strain conditions. Indeed, the structural macroscopic distortion induced by the substrate is responsible of the octahedra distortions with the resulting stabilization of x(2)-y(2) (3z(2)-r(2)) orbitals. Enhanced linear dichroism at the Mn 2p edge in very thin films, only a few unit cells thick, is in agreement with a fully strained state which favors the formation of orbital ordered phase regions.
Reference:
Strain induced x-ray absorption linear dichroism in La0.7Sr0.3MnO3 thin films (Aruta, C, Ghiringhelli, G, Tebano, A, Boggio, NG, Brookes, NB, Medaglia, PG and Balestrino, G), In PHYSICAL REVIEW B, AMERICAN PHYSICAL SOC, volume 73, 2006.
Bibtex Entry:
@article{ ISI:000238696600049, Author = {Aruta, C and Ghiringhelli, G and Tebano, A and Boggio, NG and Brookes, NB and Medaglia, PG and Balestrino, G}, Title = {{Strain induced x-ray absorption linear dichroism in La0.7Sr0.3MnO3 thin films}}, Journal = {{PHYSICAL REVIEW B}}, Year = {{2006}}, Volume = {{73}}, Number = {{23}}, Month = {{JUN}}, Abstract = {{Strain induced anisotropy in the electronic properties of La0.7Sr0.3MnO3 thin films was investigated by x-ray absorption spectroscopy at the Mn 2p and O 1s edges. Films on (100) SrTiO3 and (100) LaAlO3 substrates were grown by pulsed laser deposition with in situ reflection high energy electron diffraction diagnostic. At both absorption edges, clear features related to different anisotropic lattice strain effects as a function of the substrate were observed. On the average a negative (positive) linear dichroism was obtained for films grown under in-plane tensile (compressive) epitaxial strain conditions. Indeed, the structural macroscopic distortion induced by the substrate is responsible of the octahedra distortions with the resulting stabilization of x(2)-y(2) (3z(2)-r(2)) orbitals. Enhanced linear dichroism at the Mn 2p edge in very thin films, only a few unit cells thick, is in agreement with a fully strained state which favors the formation of orbital ordered phase regions.}}, Publisher = {{AMERICAN PHYSICAL SOC}}, Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}}, Type = {{Article}}, Language = {{English}}, Affiliation = {{Aruta, C (Corresponding Author), Univ Roma Tor Vergata, CNR, INFM, Via Politecn 1, I-00133 Rome, Italy. Univ Roma Tor Vergata, CNR, INFM, I-00133 Rome, Italy. Univ Roma Tor Vergata, Dipartimento Ingn Meccan, I-00133 Rome, Italy. Politecn Milan, INFM, CNR, I-20133 Milan, Italy. Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy. European Synchrotron Radiat Facil, F-39043 Grenoble, France.}}, DOI = {{10.1103/PhysRevB.73.235121}}, Article-Number = {{235121}}, ISSN = {{1098-0121}}, Keywords-Plus = {{MANGANITES; MAGNETORESISTANCE; SPECTROSCOPY; LA1-XSRXMNO3; TRANSITION}}, 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 Aruta, Carmela/L-2957-2015 Ghiringhelli, Giacomo/D-1159-2014 }}, ORCID-Numbers = {{Brookes, Nicholas B/0000-0002-1342-9530 Aruta, Carmela/0000-0002-6917-6667 Ghiringhelli, Giacomo/0000-0003-0867-7748 TEBANO, ANTONELLO/0000-0002-0229-671X}}, Number-of-Cited-References = {{23}}, Times-Cited = {{95}}, Usage-Count-Last-180-days = {{2}}, Usage-Count-Since-2013 = {{41}}, Journal-ISO = {{Phys. Rev. B}}, Doc-Delivery-Number = {{058WZ}}, Unique-ID = {{ISI:000238696600049}}, DA = {{2020-12-22}}, }
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