Upper critical magnetic field of superconductors with a dielectric gap on the Fermi-surface sections
A. M. Gabovich, A. S. Shpigel
DOI 10.1103/PhysRevB.38.297 · Physical Review B
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Abstract
In the framework of the model describing a superconductor with a dielectric gap on the Fermi-surface sections, the equation for the upper critical magnetic field Hc2(T) in the dirty limit is obtained and solved. It is shown that due to the electron spectrum dielectrization, the quantities Hc2(0) and & increase and the curvature & may become positive. These results are in good agreement with experimental data for a number of substances with charge- and spin-density waves, e.g., Chevrel phases, layered transition-metal dichalcogenides, antiferromagnetic organic metals (TMTSF)2X, Cr1−xRex alloys (where TMTSF is an abbreviation for tetramethyltetraselenafulvalene), and the heavy-fermion superconductor URu2Si2.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbSe3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nb3Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| V3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| URu2Si2 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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