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...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/109988 https://orcid.org/0000-0001-7809-8157 |