Skyrmion $\leftrightarrow$ pseudoSkyrmion Transition in Bilayer Quantum Hall States at $ν=1$

Details Skyrmion $\leftrightarrow$ pseudoSkyrmion Transition in Bilayer Quantum Hall States at $ν=1$ Skyrmion $\leftrightarrow$ pseudoSkyrmion Transition in Bilayer Quantum Hall States at $ν=1$

2001-08-06

arxiv.org/abs/cond-mat/0108096v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, no figures

Scientific paper

10.1103/PhysRevB.65.153307

Bilayer quantum Hall states at $\nu =1$ have been demonstrated to possess a distinguished state with interlayer phase coherence. The state has both excitations of Skyrmion with spin and pseudoSkyrmion with pseudospin. We show that Skyrmion $\leftrightarrow$ pseudoSkyrmion transition arises in the state by changing imbalance between electron densities in both layers; PseudoSkyrmion is realized at balance point, while Skyrmion is realized at large imbalance. The transition can be seen by observing the dependence of activation energies on magnetic field parallel to the layers.

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