Lattice distortion with spatial variation of carbon nanotubes in magnetic fields

A lattice instability of carbon nanotubes induced by a magnetic field perpendicular to the tube axis is studied in a k . p scheme, Both in-plane Kekule and out-of-plane distortions are enhanced drastically with increase of a magnetic field independent of whether a nanotube is metallic or semiconducting and magnetic. Bur passing through the cross section of a nanotube. The distortions become dependent on the position in the circumference direction.