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Title: Fermi surfaces, fermi patches, and fermi arcs in high T{sub c} superconductors

Abstract

A defining property of metals is the existence of a Fermi surface: for two dimensions, a continuous contour in momentum space which separates occupied from unoccupied states. In this paper, I discuss angle resolved photoemission data on the cuprate superconductor BSCCO and argue that it is not best thought of in this conventional picture. Rather, the data are consistent with ''patches'' of finite area connected by more conventional ''arcs.'' Novel physics is associated with the patches, in that the states contained in a patch are dispersionless and thus interaction dominated. In the pseudogap phase, the patches are gapped out, leaving the Fermi arcs disconnected. This unusual situation may be the key to understanding the microscopic physics of the high temperature superconductors, in that the pairing correlations are strongest in the patches, yet the superfluid density lives only on the arcs. (c) 1999 American Institute of Physics.

Authors:
 [1]
  1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
20216669
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 483; Journal Issue: 1; Other Information: PBD: 1 Sep 1999; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; HIGH-TC SUPERCONDUCTORS; BISMUTH OXIDES; STRONTIUM OXIDES; CALCIUM OXIDES; COPPER OXIDES; PHOTOEMISSION; ENERGY GAP; ENERGY-LEVEL DENSITY; ELECTRONIC STRUCTURE; THEORETICAL DATA

Citation Formats

Norman, M. R. Fermi surfaces, fermi patches, and fermi arcs in high T{sub c} superconductors. United States: N. p., 1999. Web. doi:10.1063/1.59631.
Norman, M. R. Fermi surfaces, fermi patches, and fermi arcs in high T{sub c} superconductors. United States. doi:10.1063/1.59631.
Norman, M. R. Wed . "Fermi surfaces, fermi patches, and fermi arcs in high T{sub c} superconductors". United States. doi:10.1063/1.59631.
@article{osti_20216669,
title = {Fermi surfaces, fermi patches, and fermi arcs in high T{sub c} superconductors},
author = {Norman, M. R.},
abstractNote = {A defining property of metals is the existence of a Fermi surface: for two dimensions, a continuous contour in momentum space which separates occupied from unoccupied states. In this paper, I discuss angle resolved photoemission data on the cuprate superconductor BSCCO and argue that it is not best thought of in this conventional picture. Rather, the data are consistent with ''patches'' of finite area connected by more conventional ''arcs.'' Novel physics is associated with the patches, in that the states contained in a patch are dispersionless and thus interaction dominated. In the pseudogap phase, the patches are gapped out, leaving the Fermi arcs disconnected. This unusual situation may be the key to understanding the microscopic physics of the high temperature superconductors, in that the pairing correlations are strongest in the patches, yet the superfluid density lives only on the arcs. (c) 1999 American Institute of Physics.},
doi = {10.1063/1.59631},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 483,
place = {United States},
year = {1999},
month = {9}
}