TEMPERATURE-DEPENDENCE OF THE DYNAMIC SUSCEPTIBILITY CHI''(OMEGA) IN SUPERCONDUCTING YBA2CU3O6.6(TC=53-K)

被引：110

作者：

STERNLIEB, BJ ^{[1
]}

SHIRANE, G ^{[1
]}

TRANQUADA, JM ^{[1
]}

SATO, M ^{[1
]}

SHAMOTO, S ^{[1
]}

机构：

[1] NAGOYA UNIV,DEPT PHYS,NAGOYA 46401,JAPAN

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.47.5320

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Temperature-dependent neutron-scattering measurements of the dynamic susceptibility chi''(omega) in single-crystal YBa2Cu3O6.6 (T(c) = 53 K) are reported. At high temperatures (T greater than or similar to 100 K) a universal dependence of chi''(omega) on the ratio omega/T has been observed. A spin pseudogap omega(g) congruent-to 10 meV results in a breakdown in this behavior at temperatures well above T(c). Below approximately 40 K the scattering intensities at energy transfers of DELTAE = 5 and 8 meV demonstrate a surprising recovery with decreasing temperature. The behavior of chi''(omega) over the range of energies (3-16 meV) and temperatures (1.5-300 K) studied presents a strong constraint on theoretical descriptions of YBa2Cu3O6+x.

引用

页码：5320 / 5324

页数：5

共 21 条

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