Martin Jens, Ilani Shahal, Verdene Basile, Smet Jurgen, Umansky Vladimir, Mahalu Diana, Schuh Dieter, Abstreiter Gerhard, Yacoby Amir
Weizmann Institute of Science, Condensed Matter Physics, 76100 Rehovot, Israel.
Science. 2004 Aug 13;305(5686):980-3. doi: 10.1126/science.1099950.
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.
一个与分数量子霍尔效应的微观特性相关的突出问题是理解参与局域化但对电子输运没有贡献的粒子的本质。通过使用扫描单电子晶体管，我们对分数量子霍尔区域中的单个局域态进行了成像，并确定了局域化粒子的电荷。突出填充因子1/3和2/3之间的对称性，我们的测量表明，分数电荷为e* = e/3的准粒子在空间中局域到亚微米尺寸，其中e是电子电荷。
