Lattice Instabilities in Cuprate Superconductors: A Possible Limiting Mechanism for Tc
M. Lang, R. Kürsch, A. Grauel, C. Geibel, F. Steglich, H. Rietschel, T. Wolf, Y. Hidaka, K. Kumagai, Y. Maeno, T. Fujita
DOI 10.1103/PhysRevLett.69.482 · 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
High-resolution thermal-expansion experiments on (i) insulating La2CuO4+δ, (ii) its Sr- and Ba-doped metallic counterparts with reduced Tc values, and (iii) Nd1.85Ce0.15CuO4−δ (Tc≃24 K) reveal distinct lattice instabilities at T1=32±1 K and T2=36±1 K. T2 coincides with Tcmax found upon 15 at.% Sr doping. For YBa2Cu3O6.5 (Tc=49 K), a lattice instability occurs at T=90±1 K, i.e., again close to Tcmax=92 K.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd1.85Ce0.15CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24 | Pressure not reported | onset |
| YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 49 | Pressure not reported | unknown |
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 36 | Pressure not reported | unknown |
| La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6 | Pressure not reported | unknown |
Similar papers
Superconductivity in bulk and thin films of La1.85Sr0.15CuO4−δ and Ba2YCu3O7−δ
similarity 0.96K. Moorjani et al.
Source status unknown — claims are unverified
Macroscopic evidence for quantum criticality and field-induced quantum fluctuations in cuprate superconductors
similarity 0.96A. D. Beyer et al.
Source status unknown — claims are unverified
Relationship between the lattice parameter and superconductivity in the 2-1-4 series n-type cuprates
similarity 0.96Cong Wang et al.
Source status unknown — claims are unverified
Anomalous doping dependence of fluctuation-induced diamagnetism in Y1−xCaxBa2Cu3Oy superconductors
similarity 0.96A. Lascialfari et al.
Source status unknown — claims are unverified
Properties that change as superconductivity disappears at high-doping concentrations in La2−xSrxCuO4
similarity 0.96J. B. Torrance et al.
Source status unknown — claims are unverified
Correlation between oxygen isotope effects on transition temperature and magnetic penetration depth in high-temperature superconductors close to optimal doping
similarity 0.95R. Khasanov et al.
Source status unknown — claims are unverified