Origin of shadow bands in high-Tc cuprate superconductors studied by high-resolution angle-resolved photoemission spectroscopy

Origin of shadow bands in high-Tc cuprate superconductors studied by high-resolution angle-resolved photoemission spectroscopy

We report high-resolution angle-resolved photoemission spectroscopy on single-layered cuprate superconductor (Bi,Pb)2(Sr,La)2CuO6+δ as a function of temperature and doping level, to elucidate the origin of shadow band (SB). We found that the intensity of SB is invariable with respect to temperature,...

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Veröffentlicht in:Physica. C, Superconductivity Superconductivity, 2007-10, Vol.463-465, p.48-51
Hauptverfasser: Nakayama, K., Dobashi, T., Sato, T., Takahashi, T., Kondo, T., Takeuchi, T., Kudo, K., Kobayashi, N.
Format: Artikel
Sprache:eng
Schlagworte:
ARPES
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure
Exact sciences and technology
High-Tc superconductor
Physics
Properties of type I and type II superconductors
Superconductivity
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Zusammenfassung:We report high-resolution angle-resolved photoemission spectroscopy on single-layered cuprate superconductor (Bi,Pb)2(Sr,La)2CuO6+δ as a function of temperature and doping level, to elucidate the origin of shadow band (SB). We found that the intensity of SB is invariable with respect to temperature, doping, and substitution constituents of block layers, indicating that antiferromagnetic correlation is not responsible for the emergence of SB. Observation of similar SB in Bi2Sr2CaCu2O8+δ and La1.85Sr0.15CuO4, but not in YBa2Cu3O7−δ further supports the structural origin of SB.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2007.04.227