Possible reentrance of the fractional quantum Hall effect in the lowest Landau level.
Possible reentrance of the fractional quantum Hall effect in the lowest Landau level.
复制标题
分数量子霍尔效应可能在最低朗道能级中重入。
DOI：
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发表时间：
2004
影响因子：
8.6
通讯作者：
C. Morais Smith
中科院分区：
文献类型：
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作者：
M. Goerbig;P. Lederer;C. Morais Smith
在最近发展的复合费米子相互作用模型的框架下，我们计算了自旋极化复合费米子的不同固体相和Laughlin型液态的能量。在电子填充因子nu=4/11、6/17和4/19附近，液相的能量比竞争固体低，这可能是nu=4/11时分数量子霍尔效应的原因。当磁场变化时，固液相交替可能导致重入现象，类似于观察到的重入积分量子霍尔效应。
In the framework of a recently developed model of interacting composite fermions, we calculate the energy of different solid and Laughlin-type liquid phases of spin-polarized composite fermions. The liquid phases have a lower energy than the competing solids around the electronic filling factors nu = 4/11,6/17, and 4/19 and may thus be responsible for the fractional quantum Hall effect at nu = 4/11. The alternation between solid and liquid phases when varying the magnetic field may lead to reentrance phenomena in analogy with the observed reentrant integral quantum Hall effect.