Dynamics of edge Majorana fermions in $ν=\frac{5}2$ fractional quantum Hall effects

Details Dynamics of edge Majorana fermions in $ν=\frac{5}2$ fractional quantum Hall effects Dynamics of edge Majorana fermions in $ν=\frac{5}2$ fractional quantum Hall effects

2006-08-24

arxiv.org/abs/cond-mat/0608539v4

J. Phys.:Condens. Matter 19, 621 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, published version

Scientific paper

10.1088/0953-8984/19/46/466213

Commencing with the composite fermion description of the $\nu=5/2$ fractional quantum Hall effect, we study the dynamics of the edge neutral Majorana fermions. We confirm that these neutral modes are chiral and show that a conventional p-wave pairing interaction between CFs does not contribute to the dynamics of the edge neutral fermions. We find an important bilinear coupling between the charged and neutral modes. We show that owing to this coupling, the dispersion of the neutral modes is linear and their velocities are proportional to the wave vector of the charged mode. This dynamic origin of the motion of the edge Majorana fermions was never expected before.

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