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ARPES study of T*-phase cuprate superconductor

โœ Scribed by A. Ino; M. Higashiguchi; K. Yamazaki; T. Yamasaki; T. Narimura; K. Kobayashi; K. Shimada; H. Namatame; M. Taniguchi; T. Yoshida; A. Fujimori; Z.-X. Shen; T. Kakeshita; S. Uchida; S. Adachi; S. Tajima

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
358 KB
Volume
351
Category
Article
ISSN
0921-4526

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โœฆ Synopsis

The electronic structure of the T*-phase cuprate superconductor SmLa 0:85 Sr 0:15 CuO 4ร€d has been studied by angleresolved photoemission spectroscopy (ARPES). While a clear Fermi surface has been observed near รฐp=2; p=2รž, the electronic band is lowered to $ ร€180 meV around รฐp; 0รž due to the pseudogap formation. These features are quite similar to the ARPES result of Ca 1:9 Na 0:1 CuO 2 Cl 2 rather than La 2ร€x Sr x CuO 4 . We have also observed a distinct ''kink'' in the nodal band dispersion as in all the other hole-doped cuprates.

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