Electron tunneling into epitaxial films of Nd2 - xCexCuO4 - y

doi:10.1063/1.108410

Electron tunneling into epitaxial films of Nd_{2 - x}Ce_xCuO_{4 - y}

We have performed tunneling experiments on planar junctions Al/AlO_x/Nd_2-xCe_xCuO_4-y. This is the first experiment using epitaxial films with the planar junction for electron-doped high T_c Nd_2-xCe_xCuO_4-y. The temperature dependencies of the gap features were measured, in which the phonon structures were clearly observed in the normalized conductance curve. These results show accord with the phonon peaks in the phonon density of states obtained recently by neutron inelastic scattering experiments.

Publication:

Applied Physics Letters

Pub Date:

October 1992

DOI:

10.1063/1.108410

Bibcode:

1992ApPhL..61.1724H

Keywords:

Cerium Oxides;
Electron Tunneling;
High Temperature Superconductors;
Molecular Beam Epitaxy;
Neodymium Compounds;
Superconducting Films;
Copper Oxides;
Energy Gaps (Solid State);
Solid-State Physics

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Electron tunneling into epitaxial films of Nd2 - xCexCuO4 - y

Abstract

Electron tunneling into epitaxial films of Nd_{2 - x}Ce_xCuO_{4 - y}