p-wave Superconductivity
Eder Rodríguez Perelló PHY401 Condensed Matter Physics
14.12.2020
Main Points in the Presentation
I. Historical Context and Discovery II. Strontium Ruthenate
III. Superconducting State IV. Theoretical Understanding
V. Recent Research
Reference:
https://doi.org/10.1103/RevModPhys.75.657 https://doi.org/10.1038/s41586-019-1596-2
Historical Context and Discovery
Bednorz and Müller (1986) High Temperature Superconductivity
Perovskite Structure Copper Oxides (Cuprates)
New Perovskite-like Superconductors?
Historical Context and Discovery
Maeno et al. (1994) found the superconducting Strontium Ruthenate.
Differences:
I. “Low” Temperature Superconductivity II. Mott Insulator = Doped Materials
III. Ruthenium has even number of electrons 4d
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Strontium Ruthenate
Hashimoto Group, 1994 Maeno et al., 1994
Strontium Ruthenate
Really Low Residual Resistivity Haas–van Alphen effect
Bergemann et al., 2000
Strontium Ruthenate
Strontium Ruthenate
Superconducting State
Rice and Sigrist (1995) and Baskaran (1996)
Triplet State Superconductivity +
Ishida et al. (1997)
NMR found no Magnetic Impurities
Superconducting State
Anderson (1959) s-wave Superconductivity
Unaffected by Elastic Impurity Scattering
Haselwimmer, et al. (1998a, 1998b)
Superconducting State
Kealey et al., 2000
Luke et al. (1998)
Time Reversal Symmetry Breaking!!
Theoretical Understanding
Strontium Ruthenate Superconductivity
He Superfluid
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