The interplay between real and pseudo magnetic field in graphene with strain

Details The interplay between real and pseudo magnetic field in graphene with strain The interplay between real and pseudo magnetic field in graphene with strain

2011-05-30

arxiv.org/abs/1105.6139v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We investigate electric and magnetic properties of graphene with rotationally symmetric strain. The strain generates large pseudo magnetic field with alternating sign in space, which forms a strongly confined quantum dot connected to six chiral channels. The orbital magnetism, degeneracy, and channel opening can be understood from the interplay between real and pseudo magnetic field which have different parities under time reversal and mirror reflection. While the orbital magnetic response of the confined state is diamagnetic, it can be paramagnetic if there is an accidental degeneracy with opposite mirror reflection parity.

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