de Haas–van Alphen oscillations in high-temperature superconductors
L. Thompson, P. C. E. Stamp
DOI 10.1103/PhysRevB.81.100514 · Physical Review B
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Abstract
Recent de Haas–van Alphen (dHvA) experiments on high-Tc compounds have been interpreted using Lifshitz-Kosevich (LK) theory, which ignores many-body effects. However in quasi-2d systems, interactions plus Landau-level quantization give strong singularities in the self-energy Σ and the thermodynamic potential Ω. These are rapidly suppressed as one increases the c-axis tunneling amplitude t⊥ and/or impurity scattering. We show that interaction effects should show up in these experiments, and that they can lead to strong deviations from LK behavior. Moreover, dHvA experiments in quasi-2d systems should clearly distinguish between Fermi-liquid and non-Fermi-liquid states, for sufficiently weak impurity scattering.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.5 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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