Search for Composite Fermions at Filling Factor 5/2: Role of Landau Level and Subband Index

The pairing of composite fermions (CFs), electron-flux quasi-particles, is commonly proposed to explain the even-denominator fractional quantum Hall state observed at \nu=5/2 in the first excited (N=1) Landau level (LL) of a two-dimensional electron system (2DES). While well-established to exist in the lowest (N=0) LL, much is unknown about CFs... Show more