Electronic spectra and their relation to the (π,π) collective mode in high-Tc superconductors

被引：309
作者：
Campuzano, JC [1 ]
Ding, H
Norman, MR
Fretwell, HM
Randeria, M
Kaminski, A
Mesot, J
Takeuchi, T
Sato, T
Yokoya, T
Takahashi, T
Mochiku, T
Kadowaki, K
Guptasarma, P
Hinks, DG
Konstantinovic, Z
Li, ZZ
Raffy, H
机构：
[1] Univ Illinois, Dept Phys, Chicago, IL 60607 USA
[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
[3] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
[4] Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 46401, Japan
[5] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
[6] Natl Res Inst Met, Tsukuba, Ibaraki 305, Japan
[7] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 305, Japan
[8] Univ Paris 11, Phys Solides Lab, F-91405 Orsay, France
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.83.3709
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The photoemission line shape near (pi, 0) in Bi2Sr2CaCu2O8+delta below T-c is characterized by a sharp peak, followed at higher energy by a dip and hump. We study the evolution of this line shape as a function of momentum, temperature, and doping. We find the hump scales with the peak and persists above T-c in the pseudogap state. We present strong evidence that the peak-dip-hump structure arises from the interaction of electrons with a collective mode of wave vector (pi, pi). The inferred mode energy and its doping dependence agree well with a magnetic resonance observed by neutron scattering.
引用
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页码：3709 / 3712
页数：4
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