Abstract
Transport anisotropies of c. ab104 to 105 were measured for superconducting and nonsuperconducting Bi2+xSr2-yCuO6± crystals. In superconducting samples ab increases linearly with temperature from just above Tc7 to 700 K. The implication of the ab results is that classical electron-phonon scattering mechanisms are inadequate. The anisotropy and Tc for various layered superconductor systems are compared. In all crystals studied c is nonmetallic, varying as a power law T- , ±0.51.
| Original language | English |
|---|---|
| Pages (from-to) | 846-849 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 41 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1990 |