Pair breaking caused by magnetic impurities in the high-temperature superconductor Bi2.1Sr1.9Ca(Cu1−xFex)2Oy
S. Parham, T. J. Reber, Y. Cao, J. A. Waugh, Z. Xu, J. Schneeloch, R. D. Zhong, G. Gu, G. Arnold, D. S. Dessau
DOI 10.1103/PhysRevB.87.104501 · Physical Review B
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
Conventional superconductivity is robust against the addition of impurities unless the impurities are magnetic in which case superconductivity is quickly suppressed. Here we present a study of the cuprate superconductor Bi2Sr2Ca1Cu2O8+δ that is intentionally doped with the magnetic impurity, Fe. Through the use of our tomographic density of states technique, we find that while the superconducting gap magnitude is essentially unaffected by the inclusion of iron, the onset of superconductivity, TC, and the pair-breaking rate are strongly dependent and correlated. These findings suggest that, in the cuprates, the pair-breaking rate is critical to the determination of TC and that magnetic impurities do not disrupt the strength of pairing but rather the lifetime of the pairs.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2.1Sr1.9Ca(Cu1-xFex)2Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | onset |
| Bi2.1Sr1.9Ca(Cu1-xFex)2Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 67 | Pressure not reported | onset |
| Bi2.1Sr1.9CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | onset |
Similar papers
Enhancement of superconducting fluctuation under the coexistence of a competing pseudogap state in Bi2Sr2−xRxCuOy
similarity 0.94Y. Okada et al.
Source status unknown — claims are unverified
Competition Between the Pseudogap and Superconducting States of Bi2Sr2Ca0.92Y0.08Cu2O8+δ Single Crystals Revealed by Ultrafast Broadband Optical Reflectivity
similarity 0.93G. Coslovich et al.
Source status unknown — claims are unverified
Field-Enhanced Diamagnetism in the Pseudogap State of the Cuprate Bi2Sr2CaCu2O8+δ Superconductor in an Intense Magnetic Field
similarity 0.93Yayu Wang et al.
Source status unknown — claims are unverified
Temperature dependence of the bulk energy gap in underdoped Bi2Sr2CaCu2O8+δ: Evidence for the mean-field superconducting transition
similarity 0.93V. M. Krasnov
Source status unknown — claims are unverified
High-field breakdown of the superconducting critical state in Bi2Sr2CaCu2O single crystals
similarity 0.93A. Gerber & A. Milner
Source status unknown — claims are unverified
Quasiparticle dynamics in overdoped Bi1.4Pb0.7Sr1.9CaCu2O8+δ: Coexistence of superconducting gap and pseudogap below Tc
similarity 0.92Saritha K. Nair et al.
Source status unknown — claims are unverified