Collective charge density wave motion through an ensemble of Aharonov-Bohm rings
Collective charge density wave motion through an ensemble of Aharonov-Bohm rings
复制标题
通过阿哈罗诺夫-玻姆环集合的集体电荷密度波运动
DOI：
10.1209/epl/i1998-00407-y
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发表时间：
1997
期刊：
影响因子：
1.8
通讯作者：
B. Rejaei
中科院分区：
文献类型：
--
作者：
M. Visscher;B. Rejaei
我们从理论上研究了无序Aharonov-Bohm环系综中的集体电荷密度波动。结果表明，磁通对阈值电场和磁阻的调制具有半磁通量子周期Φ0/2=h/2e，这是多环随机散射位相系综平均化的结果。随着偏压的增加，磁阻振荡的幅度迅速减小。这与最近在NbSe3上存在柱状缺陷(Phys.Rev.Lett，78(1997)919)。
We theoretically investigate the collective charge density wave motion through an ensemble of small disordered Aharonov-Bohm rings. It is shown that the magnetic flux modulates the threshold field and the magnetoresistance with a half-flux quantum periodicity Φ0/2 = h/2e, resulting from ensemble averaging over random scattering phases of multiple rings. The magnitude of the magnetoresistance oscillations decreases rapidly with increasing bias. This is consistent with recent experiments on NbSe3 in presence of columnar defects (Phys. Rev. Lett., 78 (1997) 919).