MAGNETIC DYNAMICS OF SUPERCONDUCTING LA1.86SR0.14CUO4

被引：299
作者：
MASON, TE
AEPPLI, G
MOOK, HA
机构：
[1] RISO NATL LAB,DK-4000 ROSKILDE,DENMARK
[2] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 09期
关键词：
D O I：
10.1103/PhysRevLett.68.1414
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The general magnetic response function chi(Q, omega) of a superconducting (T(c) = 33 K) single crystal of La1.86Sr0.14CuO4 is measured using inelastic neutron scattering. There is no gap in the magnetic fluctuation spectrum of the normal state. Superconductivity reduces chi"(Q, omega) in progressively greater proportion as HBAR-omega decreases below 6 meV. The superconducting transition coincides with a sharp maximum in the temperature-dependent chi"(Q, omega) for HBAR-omega = 4 meV and Q fixed at the incommensurate wave vector characterizing the magnetic fluctuations in the normal state.
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页码：1414 / 1417
页数：4
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