Experimental evidence for a two-band superconducting state of NbSe2 single crystals
M. Zehetmayer, H. W. Weber
DOI 10.1103/PhysRevB.82.014524 · Physical Review B
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Abstract
We report on measurements and a detailed analysis of the reversible magnetization of superconducting NbSe2 single crystals. By comparing the experimental data with Ginzburg Landau theory we show that superconductivity in NbSe2 cannot be explained by an anisotropic single-band but by a multiband scenario. Applying a simple two-band model reveals the basic mixed-state parameters, which are quite different in the two bands. We identify a strongly anisotropic band that determines the properties at high magnetic fields and a second almost isotropic band that dominates at low fields. Our method is well suited for distinguishing anisotropic single-band from multiband superconductivity in various materials.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.15 | Pressure not reported | onset |
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