Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Metal-to-Insulator Transitions in La2/3Sr1/3MnO3/LaMnO3 (LSMO/LMO) Superlattices

  • Ryu, Sang-Woo (Department of Materials Science and Engineering, and Pohang Accelerator Laboratory (PAL), Pohan University of Science and Technology (POSTECH)) ;
  • Jang, Hyun-M. (Department of Materials Science and Engineering, and Pohang Accelerator Laboratory (PAL), Pohan University of Science and Technology (POSTECH))
  • Published : 2006.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

A series of manganite-based superlattices composed of half-metallic $La_{2/3}Sr_{1/3}MnO_3/LaMnO_3$ and insulating LaMnO$_3$ stacking layers were fabricated by employing pulsed laser deposition method. The dc resistivity increased drastically by simply reducing the stacking periodicity. The resistivity enhancement was accompanied by a gradual decrease in the temperature (T$_c$) of the Metal-to-Insulator Transition (MIT). This observation was interpreted as a small decrease in the effective metallic fraction near the percolation threshold. For the stacking periodicity less than a certain critical value, there appeared another transition to an insulating state at temperatures far below T$_c$. This low-temperature transition seems to be closely related to the AF-type (C-type) orbital ordering in newly formed insulating domains.

Keywords

References

  1. Y. Lu, X. W. Li, G. Q. Gong, G. Xiao, A. Gupta, P. Lecoeur, J. Z. Sun, Y. Y. Wnag, and V. P. Dravid, 'Large Magnetotunneling Effect at Low Magnetic Fields in Micrometerscale Epitaxial $La_{0.67}Sr_{0.33}MnO_3 $Tunnel Junctions,' Phys. Rev. B, 54 R8357 (1996) https://doi.org/10.1103/PhysRevB.54.R8357
  2. N. D. Mathur, G. Burnell, S. P. Isaac, T. J. Jackson, B.-S. Teo, J. L. MacManus-Driscoll, L. F. Cohen, J. E. Evetts, and M. G. Blamire, 'Large Low-Field Magnetoresistance in $La_{0.7}Ca_{0.3}MnO_3$ Induced by Artificial Grain Boundaries,' Nature (London), 387 266 (1997) https://doi.org/10.1038/387266a0
  3. J.-M. Liu, J. Li, Q. Huang, L. P. You, S. J. Wang, C. K. Ong, Z. C. Wu, Z. G. Liu, and Y. W. Du, 'Partially Crystallized $La_{0.5}Sr_{0.3}MnO_3 $Thin Films by Laser Ablation and their Enhanced Low-Field Magnetoresistance,' Appl. Phys. Lett., 76 2286 (2000) https://doi.org/10.1063/1.126332
  4. H. Yamada, M. Kawasaki, Y. Ogawa, and Y. Tokura, 'Perovskite Oxide Tricolor Superlattices with Artificially Broken Inversion Symmetry by Interface Effects,' Appl. Phys. Lett., 81 4793 (2002) https://doi.org/10.1063/1.1530734
  5. J. Jiang, L. L. Henry, K. I. Gnanasekar, C. Chen, and E. I. Meletis, 'Self-Assembly of Highly Epitaxial (La,Sr)$MnO_3$ Nanorods on (001) $LaAlO_3$,' Nano Lett., 4 741 (2004) https://doi.org/10.1021/nl049947f
  6. M. Imada, A. Fujimori, and Y. Tokura, 'Metal-Insulator Transitions,' Rev. Mod. Phys., 70 1039 (1998) https://doi.org/10.1103/RevModPhys.70.1039
  7. C. Zener, 'Interaction between the d-Shells in the Transition Metals. II. Ferromagnetic Compounds of Manganese with Perovskite Structure,' Phys. Rev., 82 403 (1951) https://doi.org/10.1103/PhysRev.82.403
  8. A. J. Millis, 'Lattice Effects in Magnetoresistive Manganese Perovskites,' Nature, 392 147 (1998) https://doi.org/10.1038/32348
  9. R. Maezono, S. Ishihara, and N. Nagaosa, 'Phase Diagram of Manganese Oxides,' Phys. Rev. B, 58 11583 (1998) https://doi.org/10.1103/PhysRevB.58.11583
  10. M. Fäth, S. Freisem, A. A. Menovsky, Y. Tomioka, J. Aarts, and J. A. Mydosh, 'Spatially Inhomogeneous Metal-Insulator Transition in Doped Manganites,' Science, 285 1540 (1999) https://doi.org/10.1126/science.285.5433.1540
  11. A. Moreo, M. Mayr, A. Feiguin, S. Yunoki, and E. Dagotto, 'Giant Cluster Coexistence in Doped Manganites and Other Compounds,' Phys. Rev. Lett., 84 5568 (2000) https://doi.org/10.1103/PhysRevLett.84.5568
  12. M. Mayr, A. Moreo, J. A. Vergés, J. Arispe, A. Feiguin, and E. Dagotto, 'Resistivity of Mixed-Phase Manganites,' Phys. Rev. Lett., 86 135 (2001) https://doi.org/10.1103/PhysRevLett.86.135
  13. G. Papavassiliou, M. Fardis, M. Belesi, T. G. Maris, G. Kallias, M. Pissas, and D. Niarchos, '$^{55}Mn$ NMR Investigation of Electronic Phase Separation in $La_{1-x}Ca_xMnO_3 for0.2{\leq}x\leq0.5$' Phys. Rev. Lett., 84 761 (2000) https://doi.org/10.1103/PhysRevLett.84.761
  14. Y. Endoh, K. Hirota, S. Ishihara, S. Okamoto, Y. Murakami, A. Nishizawa, T. Fukuda, H. Kimura, H. Nojiri, K. Kaneko, and S. Maekawa, 'Transition between Two Ferromagnetic States Driven by Orbital Ordering in $La_{0.88}Sr_{0.12}MnO_3$,' Phys. Rev. Lett., 82 4328 (1999) https://doi.org/10.1103/PhysRevLett.82.4328
  15. T. Shinjo and T. Takada , Metallic Superlattices; Elsevier, Amsterdam, 1987
  16. T. Hahn, International Tables for Crystallography; Kluwer Academic Publishers, Boston, 1995
  17. M. E. Vickers, M. J. Kappers, T. M. Smeeton, E. J. Thrush, J. S. Barnard, and C. J. Humphreys, 'Determination of the Indium Content and Layer Thicknesses in InGaN/GaN Quantum Wells by X-Ray Scattering,' J. Appl. Phys., 94 1565 (2003) https://doi.org/10.1063/1.1587251