Evidence for two distinct energy scales in the Raman spectra of YBa2(Cu1-xNix)3O6.95 -: art. no. 177401

被引：35

作者：

Gallais, Y

Sacuto, A

Bourges, P

Sidis, Y

Forget, A

Colson, D

机构：

[1] ESPCI, Phys Solide Lab, CNRS, UPR 5, F-75221 Paris, France

[2] Ctr Etud Saclay, CEA, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

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

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.88.177401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report electronic Raman scattering from Ni-substituted YBa2Cu O-3(6.95) single crystals with T-c ranging from 92.5 to 78 K. The fully symmetrical A(1g) channel and the B-1g channel which is sensitive to the d(x)(2)-y(2) gap maximum have been explored. The energy of the B-1g pair-breaking peak remains constant under Ni doping while the energy of the A(1g) peak scales with T-c (E-A1g/k(B)T(c) = 5 ). Our data show that the A(1g) peak tracks the magnetic resonance peak observed in inelastic neutron scattering yielding a key explanation to the long-standing problem of the origin of the A(1g) peak.

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页数：4

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