The effect of collective spin-1 excitations on electronic spectra in high-Tc superconductors

被引:296
作者
Eschrig, M [1 ]
机构
[1] Univ Karlsruhe, Inst Theoret Kernphys, D-76128 Karlsruhe, Germany
基金
美国国家科学基金会;
关键词
D O I
10.1080/00018730600645636
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We review recent experimental and theoretical results on the interaction between single-particle excitations and collective spin excitations in the superconducting state of high-T-c cuprates. We concentrate on the traces that sharpen features in the magnetic-excitation spectrum (measured by inelastic neutron scattering) and imprint in the spectra of single-particle excitations (measured, e. g. by angle-resolved photoemission spectroscopy, tunnelling spectroscopy, and indirectly also by optical spectroscopy). The ideal object to obtain a quantitative picture for these interaction effects is a spin-1 excitation around 40 meV, termed 'resonance mode'. Although the total weight of this spin-1 excitation is small, the confinement of its weight to a rather narrow momentum region around the antiferromagnetic wavevector makes it possible to observe strong self-energy effects in parts of the electronic Brillouin zone. Notably, the sharpness of the magnetic excitation in energy has allowed these self-energy effects to be traced in the single-particle spectrum rather precisely. Namely, the doping and temperature dependence together with the characteristic energy and momentum behaviour of the resonance mode has been used as a tool to examine the corresponding self-energy effects in the dispersion and in the spectral line-shape of the single-particle spectra, and to separate them from similar effects due to the electron-phonon interaction. This leads to the unique possibility to single out the self-energy effects due to the spin-fermion interaction and to directly determine the strength of this interaction in high-T-c cuprate superconductors. The knowledge of this interaction is important for the interpretation of other experimental results as well as for the quest for the still unknown pairing mechanism in these interesting superconducting materials.
引用
收藏
页码:47 / 183
页数:137
相关论文
共 329 条
[1]   Quantum-critical theory of the spin fermion model and its application to cuprates: normal state analysis [J].
Abanov, A ;
Chubukov, AV ;
Schmalian, J .
ADVANCES IN PHYSICS, 2003, 52 (03) :119-218
[2]   Neutron resonance in the cuprates and its effect on fermionic excitations [J].
Abanov, A ;
Chubukov, AV ;
Eschrig, M ;
Norman, MR ;
Schmalian, J .
PHYSICAL REVIEW LETTERS, 2002, 89 (17) :177002/1-177002/4
[3]   Quantum-critical superconductivity in underdoped cuprates [J].
Abanov, A ;
Chubukov, AV ;
Schmalian, J .
EUROPHYSICS LETTERS, 2001, 55 (03) :369-375
[4]   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
[5]   A relation between the resonance neutron peak and ARPES data in cuprates (vol 83, pg 1652, 1999) [J].
Abanov, A ;
Chubukov, AV .
PHYSICAL REVIEW LETTERS, 2000, 84 (02) :398-398
[6]   Fingerprints of spin mediated pairing in cuprates [J].
Abanov, A ;
Chubukov, AV ;
Schmalian, J .
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2001, 117 :129-151
[7]   Coherent vs. incoherent pairing in 2D systems near magnetic instability [J].
Abanov, A ;
Chubukov, AV ;
Finkel'stein, AM .
EUROPHYSICS LETTERS, 2001, 54 (04) :488-494
[8]   Singularities in the optical response of cuprates [J].
Abanov, A ;
Chubukov, AV ;
Schmalian, J .
PHYSICAL REVIEW B, 2001, 63 (18)
[9]   A relation between the resonance neutron peak and ARPES data in cuprates [J].
Abanov, A ;
Chubukov, AV .
PHYSICA B, 2000, 280 (1-4) :189-193
[10]   Condensation energy in the spin-fermion model for cuprates [J].
Abanov, A ;
Chubukov, AV .
PHYSICAL REVIEW B, 2000, 62 (02) :R787-R790