Equilibrium and Nonequilibrium Spin Polarization near Filling Factor 3/2 |
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| Authors: | A S Zhuravlev L V Kulik V A Kuznetsov M A Khit’ko I V Kukushkin |
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| Institution: | 1.Institute of Solid State Physics,Russian Academy of Sciences,Chernogolovka, Moscow region,Russia;2.National Research University Higher School of Economics,Moscow,Russia;3.Moscow Institute of Physics and Technology (State University),Dolgoprudnyi, Moscow region,Russia |
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| Abstract: | The spin polarization features of an electron system and the relaxation of nonequilibrium spin excitations near an even-denominator fractional state of 3/2 in a two-dimensional electron system based on the GaAs/AlGaAs heterostructure are experimentally investigated. It is shown that the 3/2 state is a singular point in the filling factor dependence of the spin ordering of the two-dimensional electron system, at which the spin subsystem is rearranged. A giant slowing down of the relaxation of spin excitations to the ground state is revealed in a certain range of filling factors near filling factor 3/2. |
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