Integer effects in the entanglement and spin fluctuations of a quantum Hall system with Rashba interactions




We report distinctive nonanalytic signatures in the spin–orbit entanglement of a 2D electron gas with Rashba interactions at integer values of the filling factor and at certain level crossings. The accompanying sharp changes in the bulk spin–orbit entanglement entropy can be probed by measuring the fluctuation in the transverse spin polarization of the electron gas.