Spin paramagnetism in d-wave superconductors
D. Tanasković, Z. Radović, L. Dobrosavljević-Grujić
DOI 10.1103/PhysRevB.62.138 · Physical Review B
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Abstract
The Ginzburg-Landau equations are derived from the microscopic theory for clean layered superconductors with dx2−y2 pairing symmetry, including the Pauli paramagnetism effect. The upper critical field Hc2 parallel to the c axis is calculated. A comparison with the experimental data for YBa2Cu3O7−δ suggests that, relative to the orbital effect, the Pauli paramagnetism contribution to Hc2 is significant. The reversible magnetization M in high magnetic fields is also calculated, showing strong temperature dependence of the slope dM/dH, as a consequence of the spin paramagnetism. A simple expression for the high-temperature spin susceptibility is derived, in good agreement with the Knight-shift measurements on YBa2Cu4O8.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 84.3 | Pressure not reported | unknown |
| YBa2Cu4O8 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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