Nonhomogeneous charge distribution in layered high-Tc superconductors
M. Di Stasio, K. A. Müller, L. Pietronero
DOI 10.1103/PhysRevLett.64.2827 · Physical Review Letters
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Abstract
We consider the problem of the charge distribution of holes among the various CuO2 layers in the unit cell for compounds of the type Tl2Ba2Can−1CunO2n+4. In analogy with graphite intercalation compounds, the charge distribution is strongly nonhomogeneous (for n≥3) with a depletion in the central layers. This result points to a special importance of the bounding layers and it provides a way to understand the observed maximum Tc as a function of n.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ba2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 125 | Pressure not reported | unknown |
| Tl2Ba2Ca3Cu4O12 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 110 | Pressure not reported | unknown |
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