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Title: Change of Fermi-surface topology in Bi2Sr2CaCu2O8+o with doping

Abstract

We report the observation of a change in Fermi-surface topology of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} with doping. By collecting high-statistics angle-resolved photoemission spectroscopy data from moderately and highly overdoped samples and dividing the data by the Fermi function, we answer a long-standing question about the Fermi-surface shape of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} close to the ({pi},0) point. For moderately overdoped samples (T{sub c}=80 K) we find that both the bonding and antibonding sheets of the Fermi surface are hole like, but for a doping level corresponding to T{sub c}=55 K we find that the antibonding sheet becomes electron like. Similar observations of a topology change were observed in La{sub 2-x}Sr{sub x}CuO{sub 4} and in Bi{sub 2}Sr{sub 2}CuO{sub 6+{delta}}. On the other hand, whereas this critical doping value in single-layer materials corresponds to a T{sub c} near zero, it occurs at a smaller doping value in the double-layer case where T{sub c} is still quite high (the difference in doping levels is due to the bilayer splitting). This argues against a van Hove singularity scenario for cuprate superconductivity.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
963127
Report Number(s):
IS-J 7114
Journal ID: 1098-0121; TRN: US0903118
DOE Contract Number:  
DE-AC02-07CH11358
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 73; Journal Issue: 17
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BONDING; CUPRATES; ELECTRONS; FERMI LEVEL; PHOTOEMISSION; SHAPE; SINGULARITY; SPECTROSCOPY; SUPERCONDUCTIVITY; TOPOLOGY

Citation Formats

Kaminski, A., Rosenkranz, S., Fretwell, H.M., Norman, N.R., Randeria, M., Campuzano, J.C., Park, J-M, and Li, Z.Z. Change of Fermi-surface topology in Bi2Sr2CaCu2O8+o with doping. United States: N. p., 2006. Web. doi:10.1103/PhysRevB.73.174511.
Kaminski, A., Rosenkranz, S., Fretwell, H.M., Norman, N.R., Randeria, M., Campuzano, J.C., Park, J-M, & Li, Z.Z. Change of Fermi-surface topology in Bi2Sr2CaCu2O8+o with doping. United States. doi:10.1103/PhysRevB.73.174511.
Kaminski, A., Rosenkranz, S., Fretwell, H.M., Norman, N.R., Randeria, M., Campuzano, J.C., Park, J-M, and Li, Z.Z. Fri . "Change of Fermi-surface topology in Bi2Sr2CaCu2O8+o with doping". United States. doi:10.1103/PhysRevB.73.174511.
@article{osti_963127,
title = {Change of Fermi-surface topology in Bi2Sr2CaCu2O8+o with doping},
author = {Kaminski, A. and Rosenkranz, S. and Fretwell, H.M. and Norman, N.R. and Randeria, M. and Campuzano, J.C. and Park, J-M and Li, Z.Z.},
abstractNote = {We report the observation of a change in Fermi-surface topology of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} with doping. By collecting high-statistics angle-resolved photoemission spectroscopy data from moderately and highly overdoped samples and dividing the data by the Fermi function, we answer a long-standing question about the Fermi-surface shape of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} close to the ({pi},0) point. For moderately overdoped samples (T{sub c}=80 K) we find that both the bonding and antibonding sheets of the Fermi surface are hole like, but for a doping level corresponding to T{sub c}=55 K we find that the antibonding sheet becomes electron like. Similar observations of a topology change were observed in La{sub 2-x}Sr{sub x}CuO{sub 4} and in Bi{sub 2}Sr{sub 2}CuO{sub 6+{delta}}. On the other hand, whereas this critical doping value in single-layer materials corresponds to a T{sub c} near zero, it occurs at a smaller doping value in the double-layer case where T{sub c} is still quite high (the difference in doping levels is due to the bilayer splitting). This argues against a van Hove singularity scenario for cuprate superconductivity.},
doi = {10.1103/PhysRevB.73.174511},
journal = {Physical Review B},
number = 17,
volume = 73,
place = {United States},
year = {Fri May 12 00:00:00 EDT 2006},
month = {Fri May 12 00:00:00 EDT 2006}
}