Doping dependence of the mass enhancement in (Pb,Bi)2Sr2CaCu2O8 at the antinodal point in the superconducting and normal states -: art. no. 167002
Doping dependence of the mass enhancement in (Pb,Bi)2Sr2CaCu2O8 at the antinodal point in the superconducting and normal states -: art. no. 167002
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DOI：
10.1103/physrevlett.91.167002
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发表时间：
2003-10-17
影响因子：
8.6
通讯作者：
Fink, J
中科院分区：
文献类型：
--
作者：
Kim, TK;Kordyuk, AA;Fink, J
Angle-resolved photoemission spectroscopy is used to study the mass renormalization of the charge carriers in the high-T-c superconductor (Pb,Bi)(2)Sr2CaCu2O8 in the vicinity of the (pi,0) point in the superconducting and the normal states. Using matrix element effects at different photon energies and due to a high momentum and energy resolution the bonding and the antibonding bands could be separated in the whole dopant range. A huge coupling to a bosonic collective mode is observed below T-c for both bands, in particular, for the underdoped case. Above T-c, a weaker coupling to a continuous spectrum of modes is detected.
