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Title: Fermi surfaces of YBa sub 2 Cu sub 3 O sub 6. 9 as seen by angle-resolved photoemission

Abstract

We have carried out angle-resolved photoemission spectroscopy on single crystals of YBa{sub 2}Cu{sub 3}O{sub 6.9}. The crystals were cleaved {ital in} {ital situ}, under ultrahigh vacuum while the sample stage was cooled to 8 K. By observing the dispersion of the electron energy bands as they cross the Fermi energy, we have mapped the Fermi surfaces. There is reasonable agreement between the experimental results and the predictions of band-structure calculations using the local-density approximation, as well as with positron annihilation experiments. Rather than {delta} holes, these results indicate that the Fermi surface of YBa{sub 2}Cu{sub 3}O{sub 6.9} encloses 1+{delta} holes, where {delta} is the doping level.

Authors:
; ; ; ; ; ; ; ;  [1]; ; ;  [2]
  1. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL (USA) University of Illinois at Chicago, Chicago, IL (USA)
  2. Los Alamos National Laboratory, Los Alamos, NM (USA)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
7023663
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (USA)
Additional Journal Information:
Journal Volume: 64:19; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM OXIDES; FERMI LEVEL; COPPER OXIDES; YTTRIUM OXIDES; BINDING ENERGY; CLEAVAGE; COOLING; CORRELATIONS; ELECTRONIC STRUCTURE; EXPERIMENTAL DATA; HIGH-TC SUPERCONDUCTORS; IN-SITU PROCESSING; MAPPING; MONOCRYSTALS; PHOTOEMISSION; SPATIAL RESOLUTION; ULTRAHIGH VACUUM; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL STRUCTURE; CRYSTALS; DATA; EMISSION; ENERGY; ENERGY LEVELS; INFORMATION; MICROSTRUCTURE; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PROCESSING; RESOLUTION; SECONDARY EMISSION; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties; 656100 - Condensed Matter Physics- Superconductivity

Citation Formats

Campuzano, J C, Jennings, G, Faiz, M, Beaulaigue, L, Veal, B W, Liu, J Z, Paulikas, A P, Vandervoort, K, Claus, H, List, R S, Arko, A J, and Bartlett, R J. Fermi surfaces of YBa sub 2 Cu sub 3 O sub 6. 9 as seen by angle-resolved photoemission. United States: N. p., 1990. Web. doi:10.1103/PhysRevLett.64.2308.
Campuzano, J C, Jennings, G, Faiz, M, Beaulaigue, L, Veal, B W, Liu, J Z, Paulikas, A P, Vandervoort, K, Claus, H, List, R S, Arko, A J, & Bartlett, R J. Fermi surfaces of YBa sub 2 Cu sub 3 O sub 6. 9 as seen by angle-resolved photoemission. United States. https://doi.org/10.1103/PhysRevLett.64.2308
Campuzano, J C, Jennings, G, Faiz, M, Beaulaigue, L, Veal, B W, Liu, J Z, Paulikas, A P, Vandervoort, K, Claus, H, List, R S, Arko, A J, and Bartlett, R J. 1990. "Fermi surfaces of YBa sub 2 Cu sub 3 O sub 6. 9 as seen by angle-resolved photoemission". United States. https://doi.org/10.1103/PhysRevLett.64.2308.
@article{osti_7023663,
title = {Fermi surfaces of YBa sub 2 Cu sub 3 O sub 6. 9 as seen by angle-resolved photoemission},
author = {Campuzano, J C and Jennings, G and Faiz, M and Beaulaigue, L and Veal, B W and Liu, J Z and Paulikas, A P and Vandervoort, K and Claus, H and List, R S and Arko, A J and Bartlett, R J},
abstractNote = {We have carried out angle-resolved photoemission spectroscopy on single crystals of YBa{sub 2}Cu{sub 3}O{sub 6.9}. The crystals were cleaved {ital in} {ital situ}, under ultrahigh vacuum while the sample stage was cooled to 8 K. By observing the dispersion of the electron energy bands as they cross the Fermi energy, we have mapped the Fermi surfaces. There is reasonable agreement between the experimental results and the predictions of band-structure calculations using the local-density approximation, as well as with positron annihilation experiments. Rather than {delta} holes, these results indicate that the Fermi surface of YBa{sub 2}Cu{sub 3}O{sub 6.9} encloses 1+{delta} holes, where {delta} is the doping level.},
doi = {10.1103/PhysRevLett.64.2308},
url = {https://www.osti.gov/biblio/7023663}, journal = {Physical Review Letters; (USA)},
issn = {0031-9007},
number = ,
volume = 64:19,
place = {United States},
year = {Mon May 07 00:00:00 EDT 1990},
month = {Mon May 07 00:00:00 EDT 1990}
}