Superconductivity at very low density: The case of strontium titanate
Doped strontium titanate becomes superconducting at a density as low as n = 5 x 10[superscript 17] cm[superscript -3], where the Fermi energy is orders of magnitude smaller than the longitudinal-optical-phonon frequencies. In this limit, the only optical mode with a frequency which is smaller than t...
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society,
2017-06-16T21:31:24Z.
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| Online Access: | Get fulltext |