二维电子系统中的Azbel '-Kaner类回旋共振
Azbel'-Kaner-Like Cyclotron Resonance in a Two-Dimensional Electron System
摘要：
研究了近场激励下AlGaAs/GaAs异质结中二维电子系统的共振微波吸收。随着集体磁等离子体模式，我们观察到的共振，精确地遵循回旋共振（CR）的位置，并没有发现集体等离子体去极化移位的迹象。我们发现，发现的CR模式是不存在的法拉第几何，并局限于边缘的激发金属电极。这样的行为有利于发现共振的单粒子Azbel '-Kaner性质。
英文摘要：
Resonant microwave absorption of a two-dimensional electron system in an AlGaAs/GaAs heterostructure excited by a near-field technique was investigated. Along with collective magnetoplasmon modes, we observed resonance that precisely follows the cyclotron resonance (CR) position and revealed no signs of collective plasma depolarization shift. We show that the discovered CR mode is absent in the Faraday geometry, and is localized at the edge of the exciting metal electrode. Such behavior points in favor of the single-particle Azbel'-Kaner nature of the discovered resonance.
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