Determining the structure of the superconducting gap in Cu2 O3stwo-leg ladder materials
N. Bulut, D. J. Scalapino
DOI 10.1103/PhysRevB.55.R11985 · Physical Review B
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Abstract
Superconductivity has been recently observed in Sr0.4Ca13.6Cu24O41.84 which contains quasi-one-dimensional Cu2O3 two-leg ladders. If, as suggested by some theories, the superconductivity arises from these two-leg ladders, it will be important to determine the structure of the superconducting gap. In particular, does the gap on a two-leg ladder change sign when one goes from the bonding to antibonding Fermi surface points? Here we carry out phenomenological calculations of nuclear relaxation rates and inelastic-neutron-scattering intensity in order to provide estimates of the experimental resolution that will be required to determine the structure of the superconducting gap associated with an array of weakly coupled two-leg ladders.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr0.4Ca13.6Cu24O41.84 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | 3 GPa | unknown |
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