Violation of the Onsager relation for quantum oscillations in superconductors
Kuang-Ting Chen, Patrick A. Lee
DOI 10.1103/PhysRevB.79.180510 · Physical Review B
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Abstract
We numerically study the quantum oscillations in superconducting vortex-mixed states with d-wave pairing. We show that in the parameter range of an underdoped cuprate superconductor, the commonly held assumption that the period is given by the underlying Fermi-surface area using the Onsager relation becomes invalid. Using this result, we conclude that the interpretation of the recent experimental data on YBCO as a signal of an underlying Fermi surface with four hole pockets created by a (π,π) folding cannot be ruled out.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBCO 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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