Unadulterated spectral function of low-energy quasiparticles in Bi2Sr2CaCu2O8+δ

被引：15

作者：

Evtushinsky, D. V. ^{[1
]}

Kordyuk, A. A.

Borisenko, S. V.

Zabolotnyy, V. B.

Knupfer, M.

Fink, J.

Buechner, B.

Pan, A. V.

Erb, A.

Lin, C. T.

Berger, H.

机构：

[1] Natl Acad Sci Ukraine, Inst Met Phys, UA-03142 Kiev, Ukraine

[2] IFW Dresden, D-01171 Dresden, Germany

[3] Univ Wollongong, ISEM, Wollongong, NSW 2522, Australia

[4] Bayer Akad Wissensch, Walther Meissner Inst Tieftemp Forsch, D-85748 Garching, Germany

[5] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[6] Ecole Polytech Fed Lausanne, Inst Phys Mat Complexe, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.74.172509

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fitting the momentum distribution photoemission spectra to the Voigt profile appears to be a robust procedure to purify the interaction effects from the experimental resolution. In application to Bi2Sr2CaCu2O8+delta high-T-c cuprates, the procedure reveals the true scattering rate at low binding energies and temperatures, and consequently, the true value of the elastic scattering. Reaching the minimal value similar to 16 meV, the elastic scattering does not reveal a systematic dependence on doping level, but is rather sensitive to impurity concentration and can be explained by the forward scattering on out-of-plane impurities. The inelastic scattering is found to form well-defined quasiparticles with the scattering rate similar to omega(2) and similar to omega(3), above and below T-c, respectively.

引用

页数：4

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