Two- and three-electron bubbles in AlxGa1-xAs/Al0.24Ga0.76As quantum wells

Article

关键词: CHARGE-DENSITY-WAVE;    2-DIMENSIONAL ELECTRON LIQUID;    GROUND-STATE;    LANDAU-LEVELS;    GAS;   

DOI  :  10.1103/PhysRevB.99.161402

来源: SCIE

【 摘 要 】

We report on transport signatures of eight distinct bubble phases in the N = 3 Landau level of an AlxGa1-xAs/Al0.24Ga0.76As quantum well with x = 0.0015. These phases occur near partial filling factors nu* approximate to 0.2 (0.8) and nu* approximate to 0.3 (0.7) and have M = 2 and M = 3 electrons (holes) per bubble, respectively. We speculate that a small amount of alloy disorder in our sample helps to distinguish these broken symmetry states in low-temperature transport measurements.

【 授权许可】

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