c-axis stress dependence of normal and superconducting state properties of YBa2Cu3O7
M. F. Crommie, Amy Y. Liu, A. Zettl, Marvin L. Cohen, P. Parilla, M. F. Hundley, W. N. Creager, S. Hoen, M. S. Sherwin
DOI 10.1103/PhysRevB.39.4231 · Physical Review B
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Abstract
We have applied pressure (i.e., stress) to single-crystal YBa2Cu3O7 along the c axis to reduce the separation between the copper-oxygen planes. For the normal state, increasing pressures up to ∼1 kbar causes the c-axis resistivity to decrease dramatically and tend toward a metalliclike temperature dependence. No change is observed in the ab-plane resistivity. The superconducting Tc increases with decreasing interplane separation with dTc/dP≊0.1 K/kbar. Some implications of these findings for normal-state conduction mechanisms and models of high-Tc superconductivity for YBa2Cu3O7 are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88 | Pressure unresolved | onset |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88.94 | Pressure unresolved | onset |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88.82 | 0.1 GPa | onset |
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