FRACTIONAL QUANTUM HALL EFFECT MEASUREMENTS AT ZERO G FACTOR
FRACTIONAL QUANTUM HALL EFFECT MEASUREMENTS AT ZERO G FACTOR
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零重力系数下的分数量子霍尔效应测量
DOI：
10.1103/physrevlett.79.4246
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发表时间：
1997
影响因子：
8.6
通讯作者：
C. Foxon
中科院分区：
文献类型：
--
作者：
D. Leadley;R. Nicholas;D. Maude;A. N. Utjuzh;J. Portal;J. Harris;C. Foxon
分数量子霍尔效应能隙已被测量为塞曼能量的函数。随着 g 因子因静水压力而减小，ν = 1/3 处的间隙减小。这种行为与 ν = 1 时的行为类似，表明激发是自旋的。在较小的塞曼能量下，激发与 3 个自旋的反转一致，并且可以解释为小型复合斯格明子。在 20 kbar 时，g 改变了符号，1/3 间隙似乎再次增加。
Fractional quantum Hall effect energy gaps have been measured as a function of Zeeman energy. The gap at ν = 1/3 decreases as the g factor is reduced by hydrostatic pressure. This behavior is similar to that at ν = 1 and shows that the excitations are spinlike. At small Zeeman energy, the excitation is consistent with the reversal of 3 spins and may be interpreted as a small composite Skyrmion. At 20 kbar, where g has changed sign, the 1/3 gap appears to increase again.