Pseudo-gap behavior in the c-axis conductivity of the underdoped bilayer high Tc cuprates

被引：0
|
作者：
Ferrell, RA
Mukhin, SI
机构：
[1] Moscow Steel & Alloys Inst, Dept Theoret Phys, Moscow 117936, Russia
[2] Univ Maryland, Ctr Superconduct Res, Dept Phys, College Pk, MD 20742 USA
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1998年 / 59卷 / 10-12期
基金：
美国国家航空航天局;
关键词：
c-axis; conductivity; underdoping; cuprates;
D O I：
10.1016/S0022-3697(98)00159-0
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The frequency-dependent c-axis conductivity, sigma(c)(omega), is calculated using a periodic bilayer model of antiferromagnetically ordered spins, with one bilayer per unit cell. The spin-fluctuation gating mechanism, proposed earlier only for acoustic magnons, yields now a weakly frequency-dependent low-frequency interval followed by a steep rise in sigma(c)(omega), as a function of omega, a kind of shoulder. This theoretical prediction for sigma(c)(omega) can be associated with the experimentally observed ''pscudo-gap'' phenomenon in the underdoped YB2Cu4O8 high T-c crystal. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1976 / 1978
页数：3
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