Angle resolved photoemission from Nd1.85Ce0.15CuO4 using high energy photons: A Fermi surface investigation

We have performed an angle resolved photoemission study on a single crystal of the optimally electron doped (n-type) cuprate superconductor Nd2-xCexCuO4 (x=0.15) at a photon energy of 400 eV. The Fermi surface is mapped out and is, in agreement with earlier measurements, of hole-type with the expect...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2004-09, Vol.93 (13), p.136402.1-136402.4
Main Authors: CLAESSON, T, MANSSON, M, DALLERA, C, VENTURINI, F, DE NADÏ, C, BROOKES, N. B, TJERNBERG, O
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have performed an angle resolved photoemission study on a single crystal of the optimally electron doped (n-type) cuprate superconductor Nd2-xCexCuO4 (x=0.15) at a photon energy of 400 eV. The Fermi surface is mapped out and is, in agreement with earlier measurements, of hole-type with the expected Luttinger volume. However, comparing with previous low energy measurements, we observe a different Fermi surface shape and a different distribution of spectral intensity around the Fermi surface contour. The observed Fermi surface shape indicates a stronger electron correlation in the bulk as compared to the surface.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.136402