Strain-induced pseudo-magnetic field for novel graphene electronics

Details Strain-induced pseudo-magnetic field for novel graphene electronics Strain-induced pseudo-magnetic field for novel graphene electronics

2010-03-13

arxiv.org/abs/1003.2717v2

Nano Lett. 10, 3551 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

10.1021/nl1018063

Particular strain geometry in graphene could leads to a uniform pseudo-magnetic field of order 10T and might open up interesting applications in graphene nano-electronics. Through quantum transport calculations of realistic strained graphene flakes of sizes of 100nm, we examine possible means of exploiting this effect for practical electronics and valleytronics devices. First, we found that elastic backscattering at rough edges leads to the formation of well defined transport gaps of order 100meV under moderate maximum strain of 10%. Second, the application of a real magnetic field induced a separation, in space and energy, of the states arising from different valleys, leading to a way of inducing bulk valley polarization which is insensitive to short range scattering.

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