TY - JOUR
T1 - Momentum dependence of the superconducting Gap in Bi2Sr2CaCu2O8
AU - Ding, H.
AU - Campuzano, J. C.
AU - Bellman, A. F.
AU - Yokoya, T.
AU - Norman, M. R.
AU - Randeria, M.
AU - Takahashi, T.
AU - Katayama-Yoshida, H.
AU - Mochiku, T.
AU - Kadowaki, K.
AU - Jennings, G.
PY - 1995
Y1 - 1995
N2 - We measure the momentm dependence of the superconducting gap along the Fermi surface of Bi2Sr2CaCu2O8 by high resolution angle-resolved photoemission spectroscopy. The gap is large in the vicinity of the M̄ point (where γ- M̄ is along the Cu-O bond), and small along the γ- X and γ- Y (π,π) directions. However, the gap is not zero along these directions, but, within our accuracy, becomes zero about 10 on either side of the (π,π) directions. We discuss the implications of these results for the symmetry of the order parameter.
AB - We measure the momentm dependence of the superconducting gap along the Fermi surface of Bi2Sr2CaCu2O8 by high resolution angle-resolved photoemission spectroscopy. The gap is large in the vicinity of the M̄ point (where γ- M̄ is along the Cu-O bond), and small along the γ- X and γ- Y (π,π) directions. However, the gap is not zero along these directions, but, within our accuracy, becomes zero about 10 on either side of the (π,π) directions. We discuss the implications of these results for the symmetry of the order parameter.
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U2 - 10.1103/PhysRevLett.74.2784
DO - 10.1103/PhysRevLett.74.2784
M3 - Article
AN - SCOPUS:11944259953
SN - 0031-9007
VL - 74
SP - 2784
EP - 2787
JO - Physical Review Letters
JF - Physical Review Letters
IS - 14
ER -