Abstract

By carrying out first-principles angle-resolved photoemission (ARPES) computations within the local-density-approximation-based band theory framework, we predict the existence of surface states on the (001) surface of the superconductor Nd₂₋ₓCeₓCuO₄ (NCCO). Two surface state bands are identified in the vicinity of the Fermi energy. The associated states possess quite different characteristics in terms of their binding energy, dispersion with k∥, and the polarization and photon energy dependence. Our theoretical predictions offer new insight into the existing ARPES data on NCCO with which they are consistent.

Notes

Originally published in Physical Review Letters v.75 (1995): 1182-1185. DOI: 10.1103/PhysRevLett.75.1182

Keywords

Nd₂₋ₓCeₓCuO₄, angle resolved photoemission, ARPES, surface states

Subject Categories

Photoemission, Superconductors

Disciplines

Physics

Publisher

American Physical Society

Publication Date

8-7-1995

Rights Information

Copyright 1995 American Physical Society

Rights Holder

American Physical Society

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