Anomalous conductance quantization in carbon nanotubes
Anomalous conductance quantization in carbon nanotubes
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DOI：
10.1103/physrevlett.94.026801
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发表时间：
2005-01-21
影响因子：
8.6
通讯作者：
Marcus, CM
中科院分区：
文献类型：
--
作者：
Biercuk, MJ;Mason, N;Marcus, CM
包含门控局部耗尽区的碳纳米管的电导测量显示出作为栅极电压函数的平台，间隔大约为 1e(2)/h，即单一（非简并）模式的电导量子。研究了平台结构作为偏置电压、温度和磁场的函数。我们推测这种令人惊讶的量子化的起源，它似乎缺乏能带和自旋简并性。
Conductance measurements of carbon nanotubes containing gated local depletion regions exhibit plateaus as a function of gate voltage, spaced by approximately 1e(2)/h, the quantum of conductance for a single (nondegenerate) mode. Plateau structure is investigated as a function of bias voltage, temperature, and magnetic field. We speculate on the origin of this surprising quantization, which appears to lack band and spin degeneracy.