Lattice instability and high-Tc superconductivity in La2−xBaxCuO4
J. D. Jorgensen, H. -B. Schüttler, D. G. Hinks, D. W. Capone II, K. Zhang, M. B. Brodsky, D. J. Scalapino
DOI 10.1103/PhysRevLett.58.1024 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
La1.85Ba0.15CuO4 exhibits high-Tc superconductivity with an onset temperature near 33 K as measured by resistivity and magnetic susceptibility. The nonsuperconducting end-member compound, La2CuO4, which has an orthorhombic, Cmca structure, exhibits semiconducting behavior. The orthorhombic distortion is proposed to result from a Peierls 2kF instability or a soft zone-boundary phonon mode. The role of Ba is to suppress the instability and stabilize a higher-symmetry tetragonal, I4/mmm structure which is metallic and superconducting.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Ba0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 33 | Pressure not reported | onset |
| La1.85Ba0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 33 | Pressure not reported | onset |
| La1.85Ba0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 19 | Pressure not reported | zero_resistance |
| La1.90Ba0.10CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | onset |
Similar papers
Superconducting properties of La2−xBaxCuO4
similarity 0.96A. R. Moodenbaugh et al.
Source status unknown — claims are unverified
Two superconducting transitions in single-crystal La2−xBaxCuO4
similarity 0.96X. Y. Tee et al.
Source status unknown — claims are unverified
Evolution of superconducting correlations within magnetic-field-decoupled La2−xBaxCuO4 (x=0.095)
similarity 0.96Z. Stegen et al.
Source status unknown — claims are unverified
Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor
similarity 0.96Denitsa R. Baykusheva et al.
Source status unknown — claims are unverified
Structural instability in single crystals of the high-Tc superconductor La2−x Srx CuO4
similarity 0.95Urs Geiser et al.
Source status unknown — claims are unverified
Enhanced superconductivity in metallic oxides near the metal-insulator transition
similarity 0.95M. S. Osofsky et al.
Source status unknown — claims are unverified