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I noticed that finite electric potential cannot localize the low energy excitations in a graphene sheet. Is it possible to localize the massless fermions in the surface band of topological insulators with a magnetic field?

magnetic layer on surface

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What do you mean "localize"? Do you mean make bound states? – Ron Maimon Sep 16 '11 at 19:02
Yes. That is what I mean. – Z.Sun Sep 16 '11 at 19:50

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I found a paper dealing with a similar problem: http://apl.aip.org/resource/1/applab/v98/i16/p162101_s1

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Permalink: link.aip.org/link/doi/10.1063/1.3581887 – Qmechanic♦ Jan 17 '12 at 1:37
This paper doesn't give a localization, but a localization to 1d, which is much easier. – Ron Maimon Jul 15 '12 at 6:45

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