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Surface effects on the orbital order in the single-layered manganite La0.5Sr1.5MnO4

Nature Materials volume 6, pages 972–976 (2007)Cite this article

Abstract

The question of how bulk electronic order is terminated at a surface is an intriguing one, and one with possible practical implications—for example in nanoscaled systems that may be characterized by their surface behaviour. One example of such order is orbital order, and in principle it should be possible to probe the termination of this order with surface X-ray scattering. Here, we report the first observation of the scattering arising from the termination of bulk orbital order at the surface of a crystal—so-called ‘orbital truncation rods’. The measurements, carried out on a cleaved perovskite, La0.5Sr1.5MnO4, reveal that whereas the crystallographic surface is atomically smooth, the orbital ‘surface’, which is observed through the atomic displacements caused by the orbital order, is much rougher, with a typical scale of the surface roughness of ∼7 Å. Interestingly, the temperature dependence of this scattering shows evidence of a surface-induced second-order transition.

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Figure 1: Characterization of the chemical surface.
Figure 2: Surface scattering intensity from chemical and orbital surfaces.
Figure 3: Analysis of the CTR profiles corresponding to the orbital order.
Figure 4: Temperature dependence of the bulk- and surface-orbital order.

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References

  1. Tokura, Y. & Nagaosa, N. Orbital physics in transition-metal oxides. Science 288, 462–468 (2000).

    Article  CAS  Google Scholar 

  2. Dagotto, E. Open questions in CMR manganites, relevance of clustered states and analogies with other compounds including the cuprates. New J. Phys. 7, 67 (2005).

    Article  Google Scholar 

  3. Freeland, J. W. et al. Full bulk spin polarization and intrinsic tunnel barriers at the surface of layered manganites. Nature Mater. 4, 62–67 (2005).

    Article  CAS  Google Scholar 

  4. Plummer, E. W., Ismail, M. R., Melechko, A. V. & Zhang, J. The next 25 years of surface physics. Prog. Surf. Sci. 67, 17–44 (2001).

    Article  CAS  Google Scholar 

  5. Ohtomo, A., Muller, D. A., Grazul, J. L. & Hwang, H. Y. Artificial charge-modulation in atomic-scale perovskite titanate superlattices. Nature 419, 378–380 (2002).

    Article  CAS  Google Scholar 

  6. Okamoto, S. & Millis, A. J. Electronic reconstruction at an interface between a Mott insulator and a band insulator. Nature 428, 630–633 (2004).

    Article  CAS  Google Scholar 

  7. Dheshi, S. S. et al. Unraveling orbital ordering in La0.5Sr1.5MnO4 . Phys. Rev. Lett. 92, 056403 (2004).

    Article  Google Scholar 

  8. Wilkins, S. B. et al. Resonant soft X-ray scattering investigation of orbital and magnetic ordering in La0.5Sr1.5MnO4 . Phys. Rev. B 71, 245102 (2005).

    Article  Google Scholar 

  9. Andrews, S. R. & Cowley, R. A. Scattering of X-rays from crystal surfaces. J. Phys. C 18, 6427–6439 (1985).

    Article  CAS  Google Scholar 

  10. Wakabayashi, Y. et al. X-ray investigation of cleavage plane of single layered manganite La0.5Sr1.5MnO4 . Thin Solid Films 515, 5741–5743 (2007).

    Article  CAS  Google Scholar 

  11. Freeland, J. W., Gray, K., Mitchell, J. F., Kavich, J. & Kodama, R. Loss of ferromagnetism at the surface of in-situ cleaved La1.28Sr1.72Mn2O7 . Bull. Am. Phys. Soc., March Meeting 51, 399 (2006).

    Google Scholar 

  12. You, H. et al. X-ray crystal-truncation-rod analysis of untwinned YBa2Cu3O7−δ single crystals: The growth-termination plane. Phys. Rev. B 45, 5107–5110 (1992).

    Article  CAS  Google Scholar 

  13. Choi, J., Zhang, J., Liou, S. H., Dowben, A. & Plummer, E. W. Surfaces of the perovskite manganites La1−xCaxMnO3 . Phys. Rev. B 59, 13453–13459 (1999).

    Article  CAS  Google Scholar 

  14. Feidenhans’l, R. Surface structure determination by x-ray diffraction. Surf. Sci. Rep. 10, 105–188 (1989).

    Article  Google Scholar 

  15. Larochelle, S. et al. Structural and magnetic properties of the single-layer manganese oxide La1−xSr1+xMnO4 . Phys. Rev. B 71, 024435 (2005).

    Article  Google Scholar 

  16. Watson, G. M. et al. X-ray scattering study of the magnetic structure near the (001) surface of UO2 . Phys. Rev. Lett. 77, 751–754 (1996).

    Article  CAS  Google Scholar 

  17. Dosch, H. et al. Experimental evidence for an interference delocalization transition in Cu3Au. Phys. Rev. Lett. 60, 2382–2385 (1988).

    Article  CAS  Google Scholar 

  18. Smadici, S. et al. Electronic reconstruction at SrMnO3–LaMnO3 superlattice interfaces. Preprint at <http://www.arxiv.org/0705.4501> (2007).

  19. Vlieg, E. ROD: A program for surface X-ray crystallography. J. Appl. Cryst. 33, 401–405 (2000).

    Article  CAS  Google Scholar 

Download references

Acknowledgements

We thank A. Checco for helping with AFM measurements. Y.W. wishes to acknowledge the Yamada Science Foundation, support for long-term visit. US DOE, Basic Energy Sciences supported work at Brookhaven under contract No. DE-AC02-98CH10886, at Argonne under contract No. DE-AC02-06CH11357 and at the MUCAT Sector at the Advanced Photon Source and Ames Laboratory under contract No. DE-AC02-07CH11358.

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Authors and Affiliations

  1. Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan

    Y. Wakabayashi

  2. CMPMS, Brookhaven National Laboratory, Upton, New York 11973, USA

    Y. Wakabayashi, M. H. Upton, S. Grenier & J. P. Hill

  3. Institut Néel, CNRS & Université Joseph Fourier, BP 166, F-38042 Grenoble Cedex 9, France

    S. Grenier

  4. National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973, USA

    C. S. Nelson

  5. Ames Laboratory and Department of Physics and Astronomy, Iowa State Univ., Ames, Iowa 50011, USA

    J.-W. Kim, P. J. Ryan & A. I. Goldman

  6. Argonne National Laboratory, Argonne, Illinois 60439, USA

    H. Zheng & J. F. Mitchell

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  1. Y. Wakabayashi
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Correspondence to Y. Wakabayashi.

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Wakabayashi, Y., Upton, M., Grenier, S. et al. Surface effects on the orbital order in the single-layered manganite La0.5Sr1.5MnO4. Nature Mater 6, 972–976 (2007). https://doi.org/10.1038/nmat2061

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