Faugno W N, Balram Ajit C, Barkeshli Maissam, Jain J K
Department of Physics, 104 Davey Lab, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Niels Bohr International Academy and the Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark.
Phys Rev Lett. 2019 Jul 3;123(1):016802. doi: 10.1103/PhysRevLett.123.016802.
We theoretically investigate the nature of the state at the quarter filled lowest Landau level and predict that, as the quantum well width is increased, a transition occurs from the composite fermion Fermi sea into a novel non-Abelian fractional quantum Hall state that is topologically equivalent to f-wave pairing of composite fermions. This state is topologically distinct from the familiar p-wave paired Pfaffian state. We compare our calculated phase diagram with experiments and make predictions for many observable quantities.
我们从理论上研究了最低朗道能级四分之一填充时的态的性质，并预测，随着量子阱宽度的增加，会发生从复合费米子费米海到一种新型非阿贝尔分数量子霍尔态的转变，该态在拓扑上等同于复合费米子的f波配对。这个态在拓扑上与常见的p波配对的帕法夫态不同。我们将计算出的相图与实验进行比较，并对许多可观测的量做出预测。
