Interplay between the pseudogap and superconductivity in underdoped HgBa2CuO4+δ single crystals -: art. no. 012506

被引：29

作者：

Gallais, Y

Sacuto, A

Devereaux, TP

Colson, D

机构：

[1] Ecole Super Phys & Chim Ind Ville Paris, Lab Phys Solide, CNRS, UPR 5, F-75231 Paris, France

[2] Univ Paris 07, CNRS, FDR 2437, F-75251 Paris, France

[3] Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada

[4] CEA Saclay, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.71.012506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a doping-dependent electronic Raman scattering (ERS) study of HgBa2CuO4+delta (Hg-1201) single crystals. We investigate the dynamics of the antinodal and nodal quasiparticles. We show that the dynamical response of the antinodal quasiparticles is strongly reduced towards the underdoped regime in both the normal and superconducting states. When probing the nodal quasiparticles, we are able to distinguish between the energy scale of the pseudogap and that of the superconducting gap. A simple model relating the suppression of the dynamical response of the antinodal quasiparticles to fluctuations related to a competing phase is proposed.

引用

页数：4

共 28 条

[1]

[Anonymous], COMMUNICATION

[2] Synthesis, crystal structure and magnetic properties of superconducting single crystals of HgBa2CuO4+delta [J].