c-axis resistivity in high-Tc superconductors
Marco Zoli
DOI 10.1103/PhysRevB.56.111 · Physical Review B
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Abstract
The interactions between polarons and the anharmonic vibrations of the apical oxygen atoms in the normal state of YBa2Cu3O7−δ superconductors have been studied by using a path integral formalism. The temperature effects in the distribution of double-well potentials associated with the anharmonic modes have been taken into account. It is shown that the c-axis electrical resistivity depends linearly on temperature for intermediate values of the overall electron-phonon coupling, whereas strong anharmonicity induces a nonmetallic behavior as a consequence of trapping of the charge carriers.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | 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 |
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