Universal conductance fluctuations in a narrow channel of two-dimensional electron gas under gradient magnetic field with zero mean
Universal conductance fluctuations in a narrow channel of two-dimensional electron gas under gradient magnetic field with zero mean
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DOI：
10.1143/jpsj.73.2928
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发表时间：
2004-11-01
影响因子：
1.7
通讯作者：
Iye, Y
中科院分区：
文献类型：
--
作者：
Hara, M;Endo, A;Iye, Y
我们研究了二维电子气窄通道中的普适电导涨落（UCF），该通道由沿着通道中心线沉积的钴条产生，并受到平均值为零的梯度磁场的作用。我们发现，与均匀磁场中的UCF相比，在低温极限下，涨落幅度Δ G趋于较大，特征场B-c对温度的敏感性较低。
We have investigated universal conductance fluctuations (UCF) in a narrow channel of two-dimensional electron gas subjected to a gradient magnetic field with a vanishing average, generated from a cobalt strip deposited along the center line of the channel. We find that the fluctuation amplitude DeltaG tends to be a larger value in the low-temperature limit and the characteristic field B-c is less temperature sensitive, compared with those for UCF in a uniform magnetic field.