Effects of photoinduced hole doping on normal-state and superconducting transport in oxygen-deficient YBa2Cu3Oy
K. Tanabe, S. Kubo, F. Hosseini Teherani, H. Asano, M. Suzuki
DOI 10.1103/PhysRevLett.72.1537 · Physical Review Letters
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Abstract
The effects of photoinduced hole doping, caused by persistent photoconductivity, on the normal and superconducting properties of YBa2Cu3Oy (6.35≤y≤6.70) thin films are studied using a high-power-density He-Ne laser light. Substantial photoinduced enhancements of both the normal conductivity and Tc are found for all the films. Hall measurements reveal that the number of photoinduced holes depends only on the photon dose and is independent of the oxygen content. The enhanced Tc has a nearly quadratic correlation with the hole density similar to that observed in YBa2Cu3Oy when the hole density is varied by adding oxygen to the CuOx chain.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 73 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 45 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.5 | Pressure not reported | unknown |
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