Anomalies in the infrared spectra of underdoped Bi2Sr2CaCu2Oz as evidence for the intrabilayer Josephson effect
V. Železný, S. Tajima, D. Munzar, T. Motohashi, J. Shimoyama, K. Kishio
DOI 10.1103/PhysRevB.63.060502 · Physical Review B
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Abstract
It was found that the c-axis optical conductivity spectra of underdoped Bi2Sr2CaCu2Oz exhibit an anomalous increase of the electronic background around 450 cm−1 below Tc, accompanied by several phonon anomalies. Our observations confirm that these features, so far observed only in high-Tc compounds with considerably higher c-axis conductivity, are common in the family of underdoped bilayer cuprates. The data can be well understood within a model involving variations of the electric field inside the unit cell and the intrabilayer Josephson effect. Some differences from the cases of the other cuprates are attributed to a highly insulating property of the blocking layers.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2Oz Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 80 | Pressure not reported | unknown |
| Bi2Sr2CaCu2Oz Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pb2Sr2(Y/Ca)Cu3O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| SmLa1-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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