2003
DOI: 10.1016/j.physleta.2003.10.066
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SU(4) coherent effects to the canted antiferromagnetic phase in bilayer quantum Hall systems at ν=2

Abstract: In bilayer quantum Hall (BLQH) systems at ν=2, three different kinds of ground states are expected to be realized, i.e. a spin polarized phase (spin phase), a pseudospin polarized phase (ppin phase) and a canted antiferromagnetic phase (C-phase). An SU(4) scheme gives a powerful tool to investigate BLQH systems which have not only the spin SU(2) but also the layer (pseudospin) SU(2) degrees of freedom. In this paper, we discuss an origin of the C-phase in the SU(4) context and investigate SU(4) coherent effect… Show more

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“…We need to know how the parameters α and β are expressed in terms of the physical variables. Form (22) it is trivial to see that…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…We need to know how the parameters α and β are expressed in terms of the physical variables. Form (22) it is trivial to see that…”
Section: Introductionmentioning
confidence: 99%
“…The ground state structure of the ν = 2 bilayer QH system has been investigated based on the SU(4) formalism [20,21,22,23,24,25]. The expectation values of the SU(4) isospin operators are the order parameters, in terms of which an anisotropic SU(4) nonlinear sigma model has been derived to describe low-energy coherent phenomena [20].…”
Section: Introductionmentioning
confidence: 99%