Peterson Michael R, Jolicoeur Th, Das Sarma S
Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
Phys Rev Lett. 2008 Jul 4;101(1):016807. doi: 10.1103/PhysRevLett.101.016807. Epub 2008 Jul 3.
We find the finite width, i.e., the layer thickness, of experimental quasi-two-dimensional systems produces a physical environment sufficient to stabilize the Moore-Read Pfaffian state thought to describe the fractional quantum Hall effect at filling factor nu=5/2. This conclusion is based on exact calculations performed in the spherical and torus geometries, studying wave function overlap and ground state degeneracy.
我们发现，实验性准二维系统的有限宽度（即层厚度）产生了一种足以稳定被认为描述填充因子ν = 5/2 时的分数量子霍尔效应的摩尔-里德普法夫态的物理环境。这一结论是基于在球面和环面几何结构中进行的精确计算得出的，这些计算研究了波函数重叠和基态简并性。
