Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2005 Sep 30;95(14):146401. Epub 2005 Sep 27.

Fermi surface evolution and Luttinger theorem in Na(x)CoO2: a systematic photoemission study.

Author information

  • 1Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA.


We report a systematic angle-resolved photoemission study on Na(x)CoO2 for a wide range of Na concentrations (0.3 < or = x < or = 0.72). In all the metallic samples at different x, we observed (i) only a single holelike Fermi surface centered around gamma and (ii) its area changes with x according to the Luttinger theorem. We also observed a surface state that exhibits a larger Fermi surface area. The e'(g) band and the associated small Fermi surface pockets near the K points predicted by band calculations are found to sink below the Fermi energy in a manner almost independent of the doping and temperature.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk