Paramagnetic tunneling state concept of the low-temperature magnetic anomalies of multicomponent insulating glasses

被引：4

作者：

Borisenko, Alexander ^{[1
]}

Bakai, Alexander ^{[1
]}

机构：

[1] Natl Sci Ctr, Kharkov Phys & Technol Inst, UA-61008 Kharkov, Ukraine

来源：

PHYSICA B-CONDENSED MATTER | 2007年 / 388卷 / 1-2期

关键词：

paramagnetic tunneling states; low-temperature properties; multicomponent glasses;

D O I：

10.1016/j.physb.2006.05.011

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A generalized tunneling model of multicomponent insulating glasses is formulated, considering a subset of tunneling states to be paramagnetic centers of the electronic hole type. The expression for magnetic field-dependent contribution into the free energy is obtained. The derivation is made of the expression for the nonmonotonic magnetic field dependence of dielectric susceptibility, recently observed for some SiO2-based glasses in the sub-Kelvin temperature range. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：112 / 117

页数：6

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