Localization of fractionally charged quasi-particles
Localization of fractionally charged quasi-particles
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DOI：
10.1126/science.1099950
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发表时间：
2004-08-13
期刊：
影响因子：
56.9
通讯作者：
Yacoby, A
中科院分区：
文献类型：
--
作者：
Martin, J;Ilani, S;Yacoby, A
与分数量子霍尔效应的微观性质有关的一个悬而未决的问题是理解参与局部化但不有助于电子输运的粒子的性质。通过使用扫描单电子晶体管，我们成像的分数量子霍尔制度的个别局域态，并确定了局域粒子的电荷。突出填充因子1/3和2/3之间的对称性，我们的测量表明，准粒子与分数电荷e* = e/3定位在空间中的亚微米尺寸，其中e是电子电荷。
An outstanding question pertaining to the microscopic properties of the fractional quantum Hall effect is understanding the nature of the particles that participate in the localization but that do not contribute to electronic transport. By using a scanning single electron transistor, we imaged the individual localized states in the fractional quantum Hall regime and determined the charge of the localizing particles. Highlighting the symmetry between filling factors 1/3 and 2/3, our measurements show that quasi-particles with fractional charge e* = e/3 localize in space to submicrometer dimensions, where e is the electron charge.