The spin polarization of the FQHE ground states at fixed filling factors is analyzed within a composite fermion model. As a function of the perpendicular magnetic field several cross-overs between differently polarized ground states are predicted, in agreement with recent experimental investigations. The magnetic field and temperature scalings of the polarization, as well as the magnetic field dependence of the spin-flip gap are studied.
Spin polarization transitions in the FQHE / Mariani, E; Mazzarello, R; Sassetti, M; Kramer, B. - In: ANNALEN DER PHYSIK. - ISSN 0003-3804. - 11:12(2002), pp. 926-936. [10.1002/1521-3889(200212)11:12<926::AID-ANDP926>3.0.CO;2-R]
Spin polarization transitions in the FQHE
Mazzarello R;
2002
Abstract
The spin polarization of the FQHE ground states at fixed filling factors is analyzed within a composite fermion model. As a function of the perpendicular magnetic field several cross-overs between differently polarized ground states are predicted, in agreement with recent experimental investigations. The magnetic field and temperature scalings of the polarization, as well as the magnetic field dependence of the spin-flip gap are studied.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
