Linear temperature term of heat capacity in insulating and superconducting La-Ba-Cu-O systems
K. Kumagai, Y. Nakamichi, I. Watanabe, Y. Nakamura, H. Nakajima, N. Wada, P. Lederer
DOI 10.1103/PhysRevLett.60.724 · 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
The heat capacity of La2−xBaxCuO4 was investigated between 0.8 and 10 K. The linear temperature term γT of the heat capacity is absent in the antiferromagnetic-ordered region of x≤0.02. γ increases abruptly from x=0.02 to x=0.04 where the system is still insulating at low temperature, and seems to saturate at the order of 5 mJ/mol K2 in the superconducting region of x≥0.05. The correlation between magnetic order and vanishing γT term and the existence of a finite γT term for Ba doping give support to the resonating-valence-bond picture.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Specific heat of GdBa2Cu3O7−δ in the normal and superconducting states
similarity 0.95M. E. Reeves et al.
Source status unknown — claims are unverified
New theory of strong-coupling superconductors and high-temperature superconductivity of metallic oxides
similarity 0.94A. S. Alexandrov
Source status unknown — claims are unverified
Colloquium: Linear in temperature resistivity and associated mysteries including high temperature superconductivity
similarity 0.94Chandra M. Varma
Source status unknown — claims are unverified
Specific-heat measurements on two high-transition-temperature superconducting oxides: La1.85Ba0.15CuO4 and La1.8Sr0.2CuO4
similarity 0.94M. E. Reeves et al.
Source status unknown — claims are unverified
Density driven symmetry breaking in holographic superconductors
similarity 0.93Youngman Kim et al.
Source status unknown — claims are unverified
Erratum: Localization, superconducting fluctuations, and superconductivity in thin films and narrow wires of aluminum [Phys. Rev. B 35, 3188 (1987)]
similarity 0.93P. Santhanam et al.
Source status unknown — claims are unverified