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Complete Fermi surface mapping of Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+x</sub>(001): Coexistence of short range antiferromagnetic correlations and metallicity in the same phase
Auteur(s)
Aebi, Philipp
Osterwalder, Jürg
Schwaller, P.
Schlapbach, Louis
Shimoda, M.
Mochiku, T.
Kadowaki, K.
Date de parution
1994
In
Physical Review Letters, American Physical Society (APS), 1994/72/17/2757-2760
Résumé
The Fermi surface of Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+x</sub>(001) has been mapped at nearly 6000 points in <b>k</b> space using angle-resolved photoemission at 300 K. We observe both features that are in good agreement with the local density calculation of Massidda, Yu, and Freeman [Physica (Amsterdam) <b>158C</b>, 251 (1988)] and others that are missing in the calculation. Among those missing, most importantly, we find a <i>c</i> (2×2) superstructure on the Fermi surface strongly suggesting short range antiferromagnetic correlations. It is remarkable that this is evident in the metallic state and in the Fermi surface itself.
Identifiants
Type de publication
journal article
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