Possible reentrance of the fractional quantum Hall effect in the lowest Landau level.
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.
Goerbig
M O
MO
Département de Physique, Université de Fribourg, Pérolles, CH-1700 Fribourg, Switzerland.
Lederer
P
P
Morais Smith
C
C