TY - JOUR
T1 - Angle-resolved photoemission spectroscopy of the antiferromagnetic superconductor NdL87Ce0.13CuO4
T2 - Anisotropie spin-correlation gap, pseudogap, and the induced quaslparticle mass enhancement
AU - Matsui, H.
AU - Terashima, K.
AU - Sato, T.
AU - Takahashi, T.
AU - Wang, S. C.
AU - Yang, H. B.
AU - Ding, H.
AU - Uefuji, T.
AU - Yamada, K.
PY - 2005/2/4
Y1 - 2005/2/4
N2 - We performed high-resolution angle-resolved photoemission spectroscopy on Nd1.87Ce0.13CuO4, which is located at the boundary of the antiferromagnetic (AF) and the superconducting phase. We observed that the quasiparticle (QP) effective mass around (π, 0) is strongly enhanced due to the opening of the AF gap. The QP mass and the AF gap are found to be anisotropic, with the largest value near the intersecting point of the Fermi surface and the AF zone boundary. In addition, we observed that the QP peak disappears around the Néel temperature (TV) while the AF pseudogap is gradually filled up at much higher temperatures, possibly due to the short-range AF correlation.
AB - We performed high-resolution angle-resolved photoemission spectroscopy on Nd1.87Ce0.13CuO4, which is located at the boundary of the antiferromagnetic (AF) and the superconducting phase. We observed that the quasiparticle (QP) effective mass around (π, 0) is strongly enhanced due to the opening of the AF gap. The QP mass and the AF gap are found to be anisotropic, with the largest value near the intersecting point of the Fermi surface and the AF zone boundary. In addition, we observed that the QP peak disappears around the Néel temperature (TV) while the AF pseudogap is gradually filled up at much higher temperatures, possibly due to the short-range AF correlation.
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U2 - 10.1103/PhysRevLett.94.047005
DO - 10.1103/PhysRevLett.94.047005
M3 - Article
AN - SCOPUS:18144429441
SN - 0031-9007
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
IS - 4
M1 - 047005
ER -