High-transition-temperature superconductivity in the absence of the magnetic-resonance mode

被引:177
作者
Hwang, J
Timusk, T [1 ]
Gu, GD
机构
[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
[2] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
关键词
D O I
10.1038/nature02347
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The fundamental mechanism that gives rise to high-transition-temperature (high-T-c) superconductivity in the copper oxide materials has been debated since the discovery of the phenomenon. Recent work has focused on a sharp 'kink' in the kinetic energy spectra of the electrons as a possible signature of the force that creates the superconducting state(1-14). The kink has been related to a magnetic resonance(13,15-17) and also to phonons(18). Here we report that infrared spectra of Bi2Sr2CaCu2O8+delta (Bi-2212), shows that this sharp feature can be separated from a broad background and, interestingly, weakens with doping before disappearing completely at a critical doping level of 0.23 holes per copper atom. Superconductivity is still strong in terms of the transition temperature at this doping (T-c approximate to 55 K), so our results rule out both the magnetic resonance peak and phonons as the principal cause of high-T-c superconductivity. The broad background, on the other hand, is a universal property of the copper-oxygen plane and provides a good candidate signature of the 'glue' that binds the electrons.
引用
收藏
页码:714 / 717
页数:4
相关论文
共 30 条
[1]   A relation between the resonance neutron peak and ARPES data in cuprates [J].
Abanov, A ;
Chubukov, AV .
PHYSICAL REVIEW LETTERS, 1999, 83 (08) :1652-1655
[2]   Electronic spectra and their relation to the (π,π) collective mode in high-Tc superconductors [J].
Campuzano, JC ;
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 .
PHYSICAL REVIEW LETTERS, 1999, 83 (18) :3709-3712
[3]   Coupling strength of charge carriers to spin fluctuations in high-temperature superconductors [J].
Carbotte, JP ;
Schachinger, E ;
Basov, DN .
NATURE, 1999, 401 (6751) :354-356
[4]   Hidden order in the cuprates [J].
Chakravarty, S ;
Laughlin, RB ;
Morr, DK ;
Nayak, C .
PHYSICAL REVIEW B, 2001, 63 (09)
[5]   Resonance as a measure of pairing correlations in the high-Tc superconductor YBa2Cu3O6.6 [J].
Dai, PC ;
Mook, HA ;
Aeppli, G ;
Hayden, SM ;
Dogan, F .
NATURE, 2000, 406 (6799) :965-968
[6]   The magnetic excitation spectrum and thermodynamics of high-Tc superconductors [J].
Dai, PC ;
Mook, HA ;
Hayden, SM ;
Aeppli, G ;
Perring, TG ;
Hunt, RD ;
Dogan, F .
SCIENCE, 1999, 284 (5418) :1344-1347
[7]   Quantitative test of a microscopic mechanism of high-temperature superconductivity [J].
Demler, E ;
Zhang, SC .
NATURE, 1998, 396 (6713) :733-735
[8]  
EISAKI H, 2004, IN PRESS PHYS REV B
[9]   Neutron scattering from magnetic excitations in Bi2Sr2CaCu2O8+δ [J].
Fong, HF ;
Bourges, P ;
Sidis, Y ;
Regnault, LP ;
Ivanov, A ;
Gu, GD ;
Koshizuka, N ;
Keimer, B .
NATURE, 1999, 398 (6728) :588-591
[10]   Resonant spin excitation in an overdoped high temperature superconductor [J].
He, H ;
Sidis, Y ;
Bourges, P ;
Gu, GD ;
Ivanov, A ;
Koshizuka, N ;
Liang, B ;
Lin, CT ;
Regnault, LP ;
Schoenherr, E ;
Keimer, B .
PHYSICAL REVIEW LETTERS, 2001, 86 (08) :1610-1613