Magnetic breakdown in the electron-doped cuprate superconductor Nd(2-x)Ce(x)CuO4: 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 Nd(2-x)Ce(x)CuO4: the reconstructed Fermi surface survives in the strongly overdoped regime

Phys Rev Lett. 2010 Dec 10;105(24):247002. doi: 10.1103/PhysRevLett.105.247002. Epub 2010 Dec 9.

Authors

T Helm¹, M V Kartsovnik, I Sheikin, M Bartkowiak, F Wolff-Fabris, N Bittner, W Biberacher, M Lambacher, A Erb, J Wosnitza, R Gross

Affiliation

¹ Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Walther-Meißner-Straße 8, D-85748 Garching, Germany.

PMID: 21231554
DOI: 10.1103/PhysRevLett.105.247002

Abstract

We report on semiclassical angle-dependent magnetoresistance oscillations and the Shubnikov-de Haas effect in the electron-overdoped cuprate superconductor Nd(2-x)CexCuO4. 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.