Kramer-Pesch Approximation for Analyzing Field-Angle-Resolved Measurements Made in Unconventional Superconductors: A Calculation of the Zero-Energy Density of States
Yuki Nagai, Nobuhiko Hayashi
DOI 10.1103/PhysRevLett.101.097001 · Physical Review Letters
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Abstract
By measuring the angular-oscillations behavior of the heat capacity with respect to the applied field direction, one can detect the details of the gap structure. We introduce the Kramer-Pesch approximation as a new method to analyze the field-angle-dependent experiments, which improves the previous Doppler-shift technique. We show that the Fermi-surface anisotropy is an indispensable factor for identifying the superconducting gap symmetry.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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