Hot spots on the Fermi surface of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} + {delta} : stripes versus superstructure.

Journal Article · Mon Mar 01 04:00:00 EST 1999 · Phys. Rev. Lett.

DOI:https://doi.org/10.1103/PhysRevLett.82.2618· OSTI ID:942475

Mesot, J; Norman, M R; Ding, H; Campuzano, J C

In a recent paper Saini et al. have reported evidence for a pseudogap around ({pi},0) at room temperature in the optimally doped superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} (Bi2212). This result is in contradiction with previous ARPES measurements. Furthermore they observed at certain points on the Fermi surface hot spots of high spectral intensity which they relate to the existence of stripes in the CuO planes. They also claim to have identified a new electronic band along {Gamma}-M{sub 1} whose one dimensional character provides further evidence for stripes. We demonstrate in this Comment that all the measured features can be simply understood by correctly considering the superstructure (umklapp) and shadow bands which occur in Bi2212.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 942475
• Report Number(s): ANL/MSD/JA-31842
• Journal Information: Phys. Rev. Lett., Journal Name: Phys. Rev. Lett. Journal Issue: 12 ; Mar. 1999 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
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ENERGY GAP
FERMI LEVEL
STRONTIUM OXIDES
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