Correlated Persistent Tunneling Currents in Glasses
无序系统与神经网络
2009-10-31 v2 介观与纳米尺度物理
摘要
Low temperature properties of glasses are derived within a generalized tunneling model, considering the motion of charged particles on a closed path in a double-well potential. The presence of a magnetic induction field B violates the time reversal invariance due to the Aharonov-Bohm phase, and leads to flux periodic energy levels. At low temperature, this effect is shown to be strongly enhanced by dipole-dipole and elastic interactions between tunneling systems and becomes measurable. Thus, the recently observed strong sensitivity of the electric permittivity to weak magnetic fields can be explained. In addition, superimposed oscillations as a function of the magnetic field are predicted.
引用
@article{arxiv.cond-mat/9908083,
title = {Correlated Persistent Tunneling Currents in Glasses},
author = {Stefan Kettemann and Peter Fulde and Peter Strehlow},
journal= {arXiv preprint arXiv:cond-mat/9908083},
year = {2009}
}
备注
4 pages