Skip to main content Accessibility help

Oxygen Octahedral Distortions in LaMO3/SrTiO3 Superlattices

  • Gabriel Sanchez-Santolino (a1) (a2), Mariona Cabero (a1) (a2), Maria Varela (a1) (a2) (a3), Javier Garcia-Barriocanal (a1), Carlos Leon (a1), Stephen J. Pennycook (a4) and Jacobo Santamaria (a1)...


In this work we study the interfaces between the Mott insulator LaMnO3 (LMO) and the band insulator SrTiO3 (STO) in epitaxially grown superlattices with different thickness ratios and different transport and magnetic behaviors. Using atomic resolution electron energy-loss spectral imaging, we analyze simultaneously the structural and chemical properties of these interfaces. We find changes in the oxygen octahedral tilts within the LaMnO3 layers when the thickness ratio between the manganite and the titanate layers is varied. Superlattices with thick LMO and ultrathin STO layers present unexpected octahedral tilts in the STO, along with a small amount of oxygen vacancies. On the other hand, thick STO layers exhibit undistorted octahedra while the LMO layers present reduced O octahedral distortions near the interfaces. These findings are discussed in view of the transport and magnetic differences found in previous studies.


Corresponding author

* Corresponding author.


Hide All
Berger, R.F., Fennie, C.J. & Neaton, J.B. (2011). Band gap and edge engineering via ferroic distortion and anisotropic strain: The case of SrTiO3 . Phys Rev Lett 107, 146804.
Borisevich, A.Y., Chang, H.J., Huijben, M., Oxley, M.P., Okamoto, S., Niranjan, M.K., Burton, J.D., Tsymbal, E.Y., Chu, Y.H., Yu, P., Ramesh, R., Kalinin, S.V. & Pennycook, S.J. (2010). Suppression of octahedral tilts and associated changes in electronic properties at epitaxial oxide heterostructure interfaces. Phys Rev Lett 105, 087204.
Bosman, M., Keast, V., García-Muñoz, J.L., D’Alfonso, A.J., Findlay, S.D. & Allen, L.J. (2007). Two-dimensional mapping of chemical information at atomic resolution. Phys Rev Lett 99, 086102.
Bosman, M., Watanabe, M., Alexander, D.T.L. & Keast, V.J. (2006). Mapping chemical and bonding information using multivariate analysis of electron energy-loss spectrum images. Ultramicroscopy 106, 10241032.
Browning, N.D., Chisholm, M.C. & Pennycook, S.J. (1993). Atomic resolution chemical analysis using a scanning transmission electron microscope. Nature 366, 143146.
Caviglia, A.D., Gariglio, S., Reyren, N., Jaccard, D., Schneider, T., Gabay, M., Thiel, S., Hammerl, G., Mannhart, J. & Triscone, J.-M. (2008). Electric field control of the LaAlO3/SrTiO3 interface ground state. Nature 456, 624627.
Cen, C., Thiel, S., Mannhart, J. & Levy, J. (2009). Oxide nanoelectronics on demand. Science 323, 10261030.
Choi, M., Oba, F., Kumagai, Y. & Tanaka, I. (2013). Anti‐ferrodistortive‐Like oxygen‐octahedron rotation induced by the oxygen vacancy in cubic SrTiO3 . Adv Mater 25, 8690.
Garcia-Barriocanal, J., Bruno, F.Y., Rivera-Calzada, A., Sefrioui, Z., Nemes, N.M., Garcia-Hernández, M., Rubio-Zuazo, J., Castro, G.R., Varela, M., Pennycook, S.J., Leon, C. & Santamaria, J. (2010). “Charge leakage” at LaMnO3/SrTiO3 interfaces. Adv Mater 22, 627632.
Garcia-Barriocanal, J., Rivera-Calzada, A., Varela, M., Sefrioui, Z., Iborra, E., Leon, C., Pennycook, S.J. & Santamaria, J. (2008). Colossal ionic conductivity at interfaces of epitaxial ZrO2:Y2O3/SrTiO3 heterostructures. Science 321, 676680.
Jia, C.L., Mi, S.B., Faley, M., Poppe, U., Schubert, J. & Urban, K. (2009). Oxygen octahedron reconstruction in the SrTiO3/LaAlO3 heterointerfaces investigated using aberration-corrected ultrahigh-resolution transmission electron microscopy. Phys Rev B 79, 081405.
Kim, Y.-M., Kumar, A., Hatt, A., Morozovska, A.N., Tselev, A., Biegalski, M.D., Ivanov, I., Eliseev, E.A., Pennycook, S.J., Rondinelli, J.M., Kalinin, S.V. & Borisevich, A.Y. (2013). Interplay of octahedral tilts and polar order in BiFeO3 films. Adv Mater 25, 24972504.
Krivanek, O.L., Corbin, G.J., Dellby, N., Elston, B.F., Keyse, R.J., Murfitt, M.F., Own, C.S., Szilagyi, Z.S. & Woodruff, J.W. (2008). An electron microscope for the aberration-corrected era. Ultramicroscopy 108, 179195.
Lee, J.H., Delaney, K.T., Bousquet, E., Spaldin, N.A. & Rabe, K.M. (2013). Strong coupling of Jahn-Teller distortion to oxygen-octahedron rotation and functional properties in epitaxially-strained orthorhombic LaMnO3. arXiv:1307.3347 [cond-mat.str-el], 1–7.
Longo, P., Thomas, P.J. & Twesten, R.D. (2012). Atomic-level EELS mapping using high-energy edges in DualEELS mode. Microsc Today 20, 3036.
May, S.J., Ryan, P.J., Robertson, J.L., Kim, J.-W., Santos, T.S., Karapetrova, E., Zarestky, J.L., Zhai, X., te Velthuis, S.G.E., Eckstein, J.N., Bader, S.D. & Bhattacharya, A. (2009). Enhanced ordering temperatures in antiferromagnetic manganite superlattices. Nat Mater 8, 892897.
Norby, P., Krogh Andersen, I.G., Krogh Andersen, E. & Andersen, N.H. (1995). The crystal structure of lanthanum manganate(lll), LaMnO3 at room temperature and at 1273 K under N2 . J Solid State Chem 119, 191196.
Ohtomo, A. & Hwang, H.Y. (2004). A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface. Nature 427, 423426.
Pennycook, S.J. & Varela, M. (2011). New views of materials through aberration-corrected scanning transmission electron microscopy. J Electron Microsc 60(Suppl 1), S213S223.
Reyren, N., Thiel, S., Caviglia, A.D., Kourkoutis, L.F., Hammerl, G., Richter, C., Schneider, C. W., W., Kopp, T., Rüetschi, A.-S., Jaccard, D., Gabay, M., Muller, D.A., Triscone, J.-M. & Mannhart, J. (2007). Superconducting interfaces between insulating oxides. Science 317, 11961199.
Rivera-Calzada, A., Diaz-Guillen, M.R., Dura, O.J., Sanchez-Santolino, G., Pennycook, T.J., Schmidt, R., Bruno, F.Y., Garcia-Barriocanal, J., Sefrioui, Z., Nemes, N.M., Garcia-Hernandez, M., Varela, M., Leon, C., Pantelides, S.T., Pennycook, S.J. & Santamaria, J. (2011). Tailoring interface structure in highly strained YSZ/STO heterostructures. Adv Mater 23, 52685274.
Smadici, Ş., Abbamonte, P., Bhattacharya, A., Zhai, X., Jiang, B., Rusydi, A., Eckstein, J., Bader, S. & Zuo, J.M. (2007). Electronic reconstruction at SrMnO3-LaMnO3 superlattice interfaces. Phys Rev Lett 99, 196404.
Thiel, S., Hammerl, G., Schmehl, A., Schneider, C.W. & Mannhart, J. (2006). Tunable quasi-two-dimensional electron gases in oxide heterostructures. Science 313, 19421945.
Tsymbal, E.Y., Dagotto, E.R., Eom, C.-B. & Ramesh, R. (2012). Multifunctional Oxide Heterostructures. Oxford, UK: Oxford University Press.
Varela, M., Gazquez, J. & Pennycook, S.J. (2012). STEM-EELS imaging of complex oxides and interfaces. MRS Bull 37, 2935.
Varela, M., Oxley, M., Luo, W., Tao, J., Watanabe, M., Lupini, A., Pantelides, S. & Pennycook, S. (2009). Atomic-resolution imaging of oxidation states in manganites. Phys Rev B 79, 085117.
Varela, M., Sefrioui, Z. & Arias, D. (1999). Intracell changes in epitaxially strained YBa2Cu3O7-x ultrathin layers in YBa2Cu3O7-x/PrBa2Cu3O7 superlattices. Phys Rev Lett 83, 39363939.
Wang, J., Neaton, J.B., Zheng, H., Nagarajan, V., Ogale, S.B., Liu, B., Viehland, D., Vaithyanathan, V., Schlom, D.G., Waghmare, U.V., Spaldin, N.A., Rabe, K.M., Wuttig, M. & Ramesh, R. (2003). Epitaxial BiFeO3 multiferroic thin film heterostructures. Science 299, 17191722.
Zubko, P., Gariglio, S., Gabay, M., Ghosez, P. & Triscone, J.-M. (2011). Interface physics in complex oxide heterostructures. Ann Rev Cond Mat Phys 2, 141165.


Oxygen Octahedral Distortions in LaMO3/SrTiO3 Superlattices

  • Gabriel Sanchez-Santolino (a1) (a2), Mariona Cabero (a1) (a2), Maria Varela (a1) (a2) (a3), Javier Garcia-Barriocanal (a1), Carlos Leon (a1), Stephen J. Pennycook (a4) and Jacobo Santamaria (a1)...


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed