Coherent peaks and minimal probing depth in photoemission spectroscopy of Mott-Hubbard systems

被引：73
作者：
Panaccione, G.
Altarelli, M.
Fondacaro, A.
Georges, A.
Huotari, S.
Lacovig, P.
Lichtenstein, A.
Metcalf, P.
Monaco, G.
Offi, F.
Paolasini, L.
Poteryaev, A.
Tjernberg, O.
Sacchi, M.
机构：
[1] CNR, INFM, TASC Lab, I-34012 Trieste, Italy
[2] Abdus Salam Int Ctr Theoret Phys, I-34014 Trieste, Italy
[3] DESY, European XFEL Project Team, D-22607 Hamburg, Germany
[4] Univ Roma III, Dipartimento Fis, I-00146 Rome, Italy
[5] Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France
[6] European Synchrotron Radiat Facil, F-38042 Grenoble 9, France
[7] Sincrotrone Trieste SCpA, I-34012 Trieste, Italy
[8] Univ Hamburg, Inst Theoret Phys, D-20355 Hamburg, Germany
[9] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA
[10] Royal Inst Technol, LMSP, S-16440 Kista, Sweden
[11] Univ Paris 06, Chim Phys Lab, MR, F-75005 Paris, France
[12] Synchrotron SOLEIL, F-91192 Gif Sur Yvette, France
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 11期
关键词：
D O I：
10.1103/PhysRevLett.97.116401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have measured hard x-ray photoemission spectra of pure vanadium sesquioxide (V2O3) across its metal-insulator transition. We show that, in the metallic phase, a clear correlation exists between the shakedown satellites observed in the vanadium 2p and 3p core-level spectra and the coherent peak measured at the Fermi level. Comparing experimental results and dynamical mean-field theory calculations, we estimate the Hubbard energy U in V2O3 (4.20 +/- 0.05 eV). From our bulk-sensitive photoemission spectra we infer the existence of a critical probing depth for investigating electronic properties in strongly correlated solids.
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页数：4
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