Signature of the CuO{sub 2} plane related bands in YBa{sub 2}Cu{sub 3}O{sub 6.9} as seen by angle-resolved photoemission
- Northeastern Univ., Boston, MA (United States). Physics Dept.
- Argonne National Lab., IL (United States). Materials Science Div.
The authors present first-principles computations together with corresponding angle-resolved photoemission measurements in order to delineate the shape and polarization dependence of the spectral feature associated with the CuO{sub 2} plane-related bands from the (001) surface of YBa{sub 2}Cu{sub 3}O{sub 6.9}. Theoretical predictions are found to be in remarkable agreement with the observed character of the spectral feature between 0 and 0.3 eV binding energy (for k{sub {parallel}} values along the {Gamma}-S line), and indicate that the local-density-approximation based wave-functions implicit in the theory provide a reasonable description of the CuO{sub 2} plane band states near the Fermi energy. The computations also show that of the six possible surface terminations, the ARPES spectra from Y123(001) surface are reasonably described by the BaO/CuO{sub 2} ideal surface termination, i.e. by assuming a BaO layer followed by a CuO{sub 2} plane layer below.
- Research Organization:
- Argonne National Lab., IL (United States). Materials Science Div.; Northeastern Univ., Boston, MA (United States). Dept. of Physics
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10158490
- Report Number(s):
- ANL/MSD/PP--77623; ON: DE94013297; CNN: Grant DMR8914120; Contract DMR-8809854
- Country of Publication:
- United States
- Language:
- English
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