Lattice instabilities and structural phase transformations in La{sub 2}CuO{sub 4} superconductors and insulators

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Soft-mode structural phase transformations, common in many perovskite-based materials, are also found in La{sub 2}CuO{sub 4} and structurally related oxides. The resulting phase behavior is rather complex, but is a natural consequence of the degeneracy of the soft phonon order parameters. This paper reviews the structural and lattice-dynamical results and their interpretation based upon mean-field statistical mechanical models.

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Axe, J. D. December 31, 1991.

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Soft-mode structural phase transformations, common in many perovskite-based materials, are also found in La{sub 2}CuO{sub 4} and structurally related oxides. The resulting phase behavior is rather complex, but is a natural consequence of the degeneracy of the soft phonon order parameters. This paper reviews the structural and lattice-dynamical results and their interpretation based upon mean-field statistical mechanical models.

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14 p.

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OSTI; NTIS; INIS; GPO Dep.

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  • Lattice effects in high {Tc} superconductors,Santa Fe, NM (United States),13-15 Jan 1992

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  • Other: DE92010045
  • Report No.: BNL--47128
  • Report No.: CONF-920141--4
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 10133425
  • Archival Resource Key: ark:/67531/metadc1318312

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1991

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  • Nov. 3, 2018, 11:47 a.m.

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  • Nov. 6, 2018, 2:24 p.m.

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Axe, J. D. Lattice instabilities and structural phase transformations in La{sub 2}CuO{sub 4} superconductors and insulators, article, December 31, 1991; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1318312/: accessed May 27, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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