Universal Conductance Fluctuations in a Narrow Channel of Two-dimensional Electron Gas under Gradient Magnetic Field with Zero Mean
Masahiro Hara, Akira Endo, Shingo Katsumoto and Yasuhiro Iye
J. Phys. Soc. Jpn. 73 2928 (2004)
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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 $\Delta G$ 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.