Electron scattering from interacting tunneling units: A model for high-Tc superconductivity
Sergey B. Simanovsky, Michael W. Klein
DOI 10.1103/PhysRevB.54.7430 · Physical Review B
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Abstract
We consider the existence of high-Tc superconductivity and the symmetry of the gap function when electrons are scattered from tunneling units that interact via an elastic strainlike potential. We examine the consequences of conduction electron scattering for the specific case of tunneling units found in experiments on the high-Tc superconductors YBa2Cu3O6+x, Bi2CaSr2Cu2O8, Tl2CaBa2Cu2O8, Tl2Ca2Ba2Cu3O10, and Tl2CaBa2CuO6. Our calculations give (i) a strongly anisotropic scattering of the conduction electrons, (ii) a strongly anisotropic superconducting gap in k space, (iii) an isotope effect different from that associated with phonon scattering in the BCS theory, (iv) a high transition temperature, and (v) a gap function with nodes and a combination of an s-wave and a dx2−y2-wave symmetry. The dx2−y2 symmetry arises from the directionally dependent scattering of electrons by the tunneling units which have a well-defined orientation with respect to the crystal axis. © 1996 The American Physical Society.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2CaSr2Cu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2CaBa2Cu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2Ca2Ba2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Tl2CaBa2CuO6 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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