Fermi surface evolution and luttinger theorem in NaxCoO2: A systematic photoemission study

We report a systematic angle-resolved photoemission study on Na{sub x}CoO{sub 2} for a wide range of Na concentrations (0.3 {le} x {le} 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 acc...

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Veröffentlicht in:	Physical review letters 2005-09, Vol.95 (14), p.146401.1-146401.4
Hauptverfasser:	YANG, H.-B, PAN, Z.-H, WANG, Z, DING, H, SEKHARAN, A. K. P, SATO, T, SOUMA, S, TAKAHASHI, T, JIN, R, SALES, B. C, MANDRUS, D, FEDOROV, A. V
Format:	Artikel
Sprache:	eng
Schlagworte:	CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Condensed matter: electronic structure, electrical, magnetic, and optical properties Electronic structure Exact sciences and technology FERMI LEVEL Metals, alloys and compounds (a15, 001c15, laves phases, chevrel phases, borocarbides, etc.) PHOTOEMISSION PHYSICS Properties of type I and type II superconductors Superconducting materials (excluding high-tc compounds) Superconductivity
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