Max Planck Institute for the Physics of Complex Systems, Dresden, Germany.
Phys Rev Lett. 2012 Sep 7;109(10):106403. doi: 10.1103/PhysRevLett.109.106403. Epub 2012 Sep 5.
A highly nonthermal electron distribution is generated when quantum Hall edge states originating from sources at different potentials meet at a quantum point contact. The relaxation of this distribution to a stationary form as a function of distance downstream from the contact has been observed in recent experiments [C. Altimiras et al., Phys. Rev. Lett. 105, 056803 (2010)]. Here we present an exact treatment of a minimal model for the system at filling factor ν=2, with results that account well for the observations.
当源自不同电势源的量子霍尔边缘态在量子点接触处相遇时，会产生高度非热电子分布。最近的实验[C. Altimiras 等人，Phys. Rev. Lett. 105, 056803 (2010)]已经观察到这种分布在从接触点向下游的距离上如何弛豫到稳定形式。在这里，我们提出了一个填充因子 ν=2 的系统的最小模型的精确处理方法，结果很好地解释了观测结果。
