Abstract
Transverse acoustic waves were generated electromagnetically at 9 GHz using In films with a conversion efficiency α of 5 × 10-5. A good agreement is found between theory and experiment and we obtain the value of 620 for the superconducting penetration depth λ at 0.4Tc and 5×1010 Ω-1 cm-2 for the ratio of the conductivity to the mean free path for In. From the temperature dependence of α below the superconducting transition temperature it is concluded that pair scattering at the surface does not conserve momentum.
| Original language | English |
|---|---|
| Pages (from-to) | 147-150 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 28 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1972 |