Linear temperature behavior of the resistivity in the new high-Tc superconductors
R. Micnas, J. Ranninger, S. Robaszkiewicz
DOI 10.1103/PhysRevB.36.4051 · Physical Review B
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Abstract
We propose that the linear temperature behavior of the resistivity observed in the new high-Tc materials might be linked to their two-dimensional character for electron transport. For three-dimensional electron transport a linear temperature law for the resistivity is obtained for temperatures above the Debye temperature ΘD. For two-dimensional transport, however, such a linear law holds above a characteristic temperature T*=2ℏspF which can be well below ΘD (s denoting the sound velocity and pF the Fermi momentum) provided that pF≪πa, which is the case for these high-Tc materials.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La(Ba,Sr)CuO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 35 | Pressure not reported | unknown |
| YBaCuO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 95 | Pressure not reported | unknown |
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