论文标题
液态氦气上光兴奋的电子气中的磁振荡和异常电流状态
Magneto-oscillations and anomalous current states in a photo-excited electron gas on liquid helium
论文作者
论文摘要
本文回顾了在正态磁场存在并暴露于微波辐射的情况下，在液体氦的自由表面形成的二维（2D）电子系统中观察到了一类新的现象。这些非平衡现象的独特特征是磁性振荡是由贝带（平面外）和贝带（面内）微波激发引起的。由子带内激发引起的电导率磁振荡与报道的半导体异质结构报道的显着微波诱导的电阻振荡（MIRO）相似。微波炉诱导的电导率振荡（MICO）的研究有助于了解Miro的起源。观察到了微波诱导的电导率振荡，并且在理论上很好地描述了呼吸器间微波激发。在强大的力量下，这种激发会导致零抗性状态（ZRS），电子的平面重新分布，自我产生的音频振荡和不可压缩状态。这些现象是由在谐振微波激发下形成的2D电子系统的异常当前状态引起的。
The paper reviews a novel class of phenomena observed recently in the two-dimensional (2D) electron system formed on the free surface of liquid helium in the presence of a magnetic field directed normally and exposed to microwave radiation. The distinctive feature of these nonequilibrium phenomena is magnetoconductivity oscillations induced by inter-subband (out-of-plane) and intra-subband (in-plane) microwave excitations. The conductivity magneto-oscillations induced by intra-subband excitation are similar to remarkable microwave-induced resistance oscillations (MIRO) reported for semiconductor heterostructures. Investigations of microwave-induced conductivity oscillations (MICO) on liquid helium helped with understanding of the origin of MIRO. Much stronger microwave-induced conductivity oscillations were observed and well described theoretically for resonant inter-subband microwave excitation. At strong powers, such excitation leads to zero-resistance states (ZRS), the in-plane redistribution of electrons, self-generated audio-frequency oscillations, and incompressible states. These phenomena are caused by unusual current states of the 2D electron system formed under resonant microwave excitation.
