GLASS-LIKE INTERACTING OFF-CENTER CA++ DIPOLES AS PROBES OF THE COHERENT QUANTUM STATE IN SRTIO3

被引：42

作者：

DEC, J

KLEEMANN, W

BIANCHI, U

BEDNORZ, JG

机构：

[1] IBM CORP,FORSCHUNGSLAB,CH-8803 RUSCHLIKON,SWITZERLAND

[2] SILESIAN UNIV,INST PHYS,PL-40007 KATOWICE,POLAND

来源：

EUROPHYSICS LETTERS | 1995年 / 29卷 / 01期

关键词：

D O I：

10.1209/0295-5075/29/1/006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Anomalies in both the linear and the non-linear dielectric permittivity of weakly doped Sr1-xCaxTiO3 (x = 0.002) and strongly rising dielectric loss in the low-frequency regime evidence coupling of Ca++ centred polar nanoregions with the predicted coherent quantum state of the host lattice. Glassiness of the nanoregion system is modelled by Lacroix-Bene-type polydispersivity with an extrapolated freezing temperature T-g approximate to 4 K.

引用

页码：31 / 36

页数：6

共 21 条

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