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Electromodulation of the bilayered nu =2 quantum Hall phase diagram
(American Physical Society (APS), 1999)
We make a number of precise experimental predictions for observing the various magnetic phases, and the quantum phase transitions between them, in the n 2 bilayered quantum Hall system. In particular, we analyze the ...
Topological doping and the stability of stripe phases
(American Physical Society (APS), 1999)
We analyze the properties of a general Ginzburg-Landau free energy with competing order parameters, long-range interactions, and global constraints e.g., a fixed value of a total ‘‘charge’’ to address the physics of ...
Non-Abelian Holonomy of BCS and SDW Quasiparticles
(Elsevier BV, 1999)
In this work we investigate properties of fermions in the SO(5) theory of high Tc supercondocutivity. We shos that the adiabatic time evolution of a SO(5) superspin vector leads to a non-Abelian SU(2) holomony of the SO(5) ...
Spin Bose-glass phase in bilayer quantum Hall systems at nu=2
(American Physical Society, 1999)
We develop an effective spin theory to describe magnetic properties of the n 2 quantum Hall bilayer systems. In the absence of disorder this theory agrees with the microscopic Hartree-Fock calculations, and for finite ...