Magnetic Breakdown in the Electron-Doped Cuprate Superconductor Nd2−xCexCuO4: The Reconstructed Fermi Surface Survives in the Strongly Overdoped Regime

T. Helm; M. V. Kartsovnik; I. Sheikin; M. Bartkowiak; F. Wolff-Fabris; N. Bittner; W. Biberacher; M. Lambacher; A. Erb; J. Wosnitza; R. Gross

doi:10.1103/PhysRevLett.105.247002

Magnetic Breakdown in the Electron-Doped Cuprate Superconductor Nd2−xCexCuO4: The Reconstructed Fermi Surface Survives in the Strongly Overdoped Regime

T. Helm, M. V. Kartsovnik, I. Sheikin, M. Bartkowiak, F. Wolff-Fabris, N. Bittner, W. Biberacher, M. Lambacher, A. Erb, J. Wosnitza, R. Gross

DOI 10.1103/PhysRevLett.105.247002 · Physical Review Letters

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Abstract

We report on semiclassical angle-dependent magnetoresistance oscillations and the Shubnikov–de Haas effect in the electron-overdoped cuprate superconductor Nd2−xCexCuO4. Our data provide convincing evidence for magnetic breakdown in the system. This shows that a reconstructed multiply connected Fermi surface persists, at least at strong magnetic fields, up to the highest doping level of the superconducting regime.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nd2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Tl2Ba2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown