Csáthy G A, Tsui D C, Pfeiffer L N, West K W
Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA.
Phys Rev Lett. 2007 Feb 9;98(6):066805. doi: 10.1103/PhysRevLett.98.066805. Epub 2007 Feb 7.
We report spontaneous narrow band oscillations in the high field Wigner solid. These oscillations are similar to the recently seen and yet unexplained oscillations in the reentrant integer quantum Hall states. The current-voltage characteristic has a region of negative differential resistance in the current biased setup and it is hysteretic in the voltage biased setup. As a consequence of the unusual breakdown, the oscillations in the Wigner solid are of the relaxation type.
我们报道了在高场维格纳固体中出现的自发窄带振荡。这些振荡类似于最近在折返整数量子霍尔态中观察到但尚未得到解释的振荡。在电流偏置设置下，电流 - 电压特性具有负微分电阻区域，而在电压偏置设置下具有滞后现象。由于这种异常击穿，维格纳固体中的振荡属于弛豫类型。
