Spin gap in HgBa2Ca2Cu3O8+delta single crystals from Cu-63 NMR

被引：148

作者：

Julien, MH

Carretta, P

Horvatic, M

Berthier, C

Berthier, Y

Segransan, P

Carrington, A

Colson, D

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH, F-38042 GRENOBLE 9, FRANCE

[2] UNIV GRENOBLE 1, SPECTROMETRIE PHYS LAB, URA 08 CNRS, F-38402 ST MARTIN DHERES, FRANCE

[3] CEA, DEPT RECH FONDAMENTALE MAT CONDENSEE, LAB CRYOPHYS, F-38054 GRENOBLE 9, FRANCE

[4] CENS, SERV PHYS ETAT CONDENSE, F-91191 GIF SUR YVETTE, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.76.4238

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on (63)Cu NMR spectra, T(1) and T(2G) measurements in single crystals of underdoped, three-layered, HgBa(2)Ca(2)Cu(3)O(8+delta), with T(c) similar or equal to 115 K. We show clear evidence for the opening of a spin gap below T* similar or equal to 230 K, the highest temperature reported so far. Also, the characteristic energy of the spin fluctuations is found to be higher than in YBa(2)Cu(3)O(6+x); both features are presumably related to the very high T(c) in this compound. Below T*, (63)T(1) has the same temperature dependence in the three CuO(2) planes, which is difficult to explain within a pure interlayer spin pairing.

引用

页码：4238 / 4241

页数：4

共 47 条

[1] Y-89 NMR EVIDENCE FOR A FERMI-LIQUID BEHAVIOR IN YBA2CU3O6+X [J].