Revealing the Fermi surface of Nd2-xCexCuO4 by high-field magnetotransport

Knowing the exact Fermi surface and its evolution with the doping level is one of the vitally important issues in the field of high-Tc superconducting cuprates. A promising tool to explore the Fermi surface is high-field magnetotransport which has been widely employed in studies of other layered systems, such as organic conductors. Recently, a breakthrough in the Fermiology of hole-doped cuprates was made by the observation of angular magnetoresistance oscillations (AMRO) and magnetic quantum oscillations. For electron-doped cuprates, however, no high-field magnetotransport data related to their Fermi surface has been reported so far. Here, we present results of high-field studies of the interlayer magnetoresistance of high-quality electron-doped Nd2-xCexCuO4 single crystals. Samples with doping levels x=0.13 to 0.17 have been studied at different temperatures and field orientations. We compare our data with those obtained on hole-doped cuprates and discuss them in terms of the Fermi surface geometry and its doping dependence.