Surface states and angle-resolved photoemission spectra from Nd{sub 2{minus}{ital x}}Ce{sub {ital x}}CuO{sub 4} superconductor
Journal Article
·
· Physical Review Letters
- Physics Department, Northeastern University, Boston, Massachusetts 02115 (United States)
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 Nd{sub 2{minus}{ital x}}Ce{sub {ital x}}CuO{sub 4} (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 {ital k}{sub {parallel}}, 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.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 113038
- Journal Information:
- Physical Review Letters, Vol. 75, Issue 6; Other Information: PBD: 7 Aug 1995
- Country of Publication:
- United States
- Language:
- English
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