Goerbig M O, Lederer P, Morais Smith C
Département de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland.
Phys Rev Lett. 2004 Nov 19;93(21):216802. doi: 10.1103/PhysRevLett.93.216802. Epub 2004 Nov 16.
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.
在最近发展的相互作用复合费米子模型框架下，我们计算了自旋极化复合费米子不同固态和劳克林型液态相的能量。在电子填充因子(\nu = 4/11)、(6/17)和(4/19)附近，液态相比竞争的固态具有更低的能量，因此可能是(\nu = 4/11)时分数量子霍尔效应的成因。当改变磁场时，固态和液态相之间的交替可能导致类似于所观察到的再入整数量子霍尔效应的再入现象。
