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Title: The coherent d-wave superconducting gap in underdoped La{sub 2-x}Sr{sub x}CuO{sub 4}by angle-resolved photoemission spectroscopy.

Abstract

We present angle-resolved photoemission spectroscopy data on moderately underdoped La{sub 1.855}Sr{sub 0.145}CuO{sub 4} at temperatures below and above the superconducting transition temperature. Unlike previous studies of this material, we observe sharp spectral peaks along the entire underlying Fermi surface in the superconducting state. These peaks trace out an energy gap that follows a simple d-wave form, with a maximum superconducting gap of 14 meV. Our results are consistent with a single gap picture for the cuprates. Furthermore our data on the even more underdoped sample La{sub 1.895}Sr{sub 0.105}CuO{sub 4} also show sharp spectral peaks, even at the antinode, with a maximum superconducting gap of 26 meV.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Swiss National Science Foundation (SNSF); Ministry of Education and Science of Japan; Swedish Research Council (SRC)
OSTI Identifier:
935280
Report Number(s):
ANL/MSD/JA-60415
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US200815%%467
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. Lett.
Additional Journal Information:
Journal Volume: 101; Journal Issue: 2008; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; ENERGY GAP; FERMI LEVEL; SUPERCONDUCTIVITY; LANTHANUM OXIDES; STRONTIUM OXIDES; COPPER OXIDES

Citation Formats

Shi, M, Chang, J, Pailhes, S, Norman, M R, Campuzano, J C, Mansson, M, Claesson, T, Tjernberg, O, Bendounan, A, Patthey, L, Momono, N, Oda, M, Ido, M, Mudry, C, Mesot, J, Materials Science Division, Paul Scherrer Inst., Zurich, ETH, Univ. Illinois, Royal Inst. Tech., and Hokkaido Univ. The coherent d-wave superconducting gap in underdoped La{sub 2-x}Sr{sub x}CuO{sub 4}by angle-resolved photoemission spectroscopy.. United States: N. p., 2008. Web. doi:10.1103/PhysRevLett.101.047002.
Shi, M, Chang, J, Pailhes, S, Norman, M R, Campuzano, J C, Mansson, M, Claesson, T, Tjernberg, O, Bendounan, A, Patthey, L, Momono, N, Oda, M, Ido, M, Mudry, C, Mesot, J, Materials Science Division, Paul Scherrer Inst., Zurich, ETH, Univ. Illinois, Royal Inst. Tech., & Hokkaido Univ. The coherent d-wave superconducting gap in underdoped La{sub 2-x}Sr{sub x}CuO{sub 4}by angle-resolved photoemission spectroscopy.. United States. https://doi.org/10.1103/PhysRevLett.101.047002
Shi, M, Chang, J, Pailhes, S, Norman, M R, Campuzano, J C, Mansson, M, Claesson, T, Tjernberg, O, Bendounan, A, Patthey, L, Momono, N, Oda, M, Ido, M, Mudry, C, Mesot, J, Materials Science Division, Paul Scherrer Inst., Zurich, ETH, Univ. Illinois, Royal Inst. Tech., and Hokkaido Univ. 2008. "The coherent d-wave superconducting gap in underdoped La{sub 2-x}Sr{sub x}CuO{sub 4}by angle-resolved photoemission spectroscopy.". United States. https://doi.org/10.1103/PhysRevLett.101.047002.
@article{osti_935280,
title = {The coherent d-wave superconducting gap in underdoped La{sub 2-x}Sr{sub x}CuO{sub 4}by angle-resolved photoemission spectroscopy.},
author = {Shi, M and Chang, J and Pailhes, S and Norman, M R and Campuzano, J C and Mansson, M and Claesson, T and Tjernberg, O and Bendounan, A and Patthey, L and Momono, N and Oda, M and Ido, M and Mudry, C and Mesot, J and Materials Science Division and Paul Scherrer Inst. and Zurich, ETH and Univ. Illinois and Royal Inst. Tech. and Hokkaido Univ.},
abstractNote = {We present angle-resolved photoemission spectroscopy data on moderately underdoped La{sub 1.855}Sr{sub 0.145}CuO{sub 4} at temperatures below and above the superconducting transition temperature. Unlike previous studies of this material, we observe sharp spectral peaks along the entire underlying Fermi surface in the superconducting state. These peaks trace out an energy gap that follows a simple d-wave form, with a maximum superconducting gap of 14 meV. Our results are consistent with a single gap picture for the cuprates. Furthermore our data on the even more underdoped sample La{sub 1.895}Sr{sub 0.105}CuO{sub 4} also show sharp spectral peaks, even at the antinode, with a maximum superconducting gap of 26 meV.},
doi = {10.1103/PhysRevLett.101.047002},
url = {https://www.osti.gov/biblio/935280}, journal = {Phys. Rev. Lett.},
issn = {0031-9007},
number = 2008,
volume = 101,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2008},
month = {Tue Jan 01 00:00:00 EST 2008}
}