Spin Polarization Curve of Fractional Quantum Hall States with Filling Factor Smaller than 2

Spin-polarization in Fractional Quantum Hall Effect

Experimental data show a number of plateaus of varying widths in the magnetic-field dependence of the electron-spin-polarization for fractional quantum Hall states. We have calculated the magnetic-field dependence of the spin-polarization using a new theory. We start by adopting the Landau gauge and ignoring Coulomb interactions between electrons; then we construct single electron states in equ...

Anomalous charge tunneling in fractional quantum Hall edge states at a filling factor ν=5/2.

We explain effective charge anomalies recently observed for fractional quantum Hall edge states at ν=5/2 [M. Dolev, Y. Gross, Y. C. Chung, M. Heiblum, V. Umansky, and D. Mahalu, Phys. Rev. B 81, 161303(R) (2010)]. The experimental data of differential conductance and excess noise are fitted, using the anti-Pfaffian model, by properly taking into account renormalizations of the Luttinger paramet...

Spin Peierls Effect in Spin Polarization of Fractional Quantum Hall States

Spin in fractional quantum Hall systems

A system at filling factor 2/3 could be a candidate for a quantum Hall ferromagnet at integer filling factor of composite fermions. Using exact diagonalization with electrons on a torus we study the transition from the singlet ground state to the polarized ground state at this filling and look for signatures of quantum Hall ferromagnetism. Differences between the fractional and corresponding in...

Fractional quantum Hall states of Rydberg polaritons

Mohammad F. Maghrebi,1,2 Norman Y. Yao,3 Mohammad Hafezi,1,4 Thomas Pohl,5 Ofer Firstenberg,6 and Alexey V. Gorshkov1,2 1Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA 2Joint Center for Quantum Information and Computer Sceince, NIST/University of Maryland, College Park, Maryland 20742, USA 3Department of Physics, University of California, Berkeley, Calif...