Small scale lateral superlattices in two-dimensional electron gases prepared by diblock copolymer masks

Details Small scale lateral superlattices in two-dimensional electron gases prepared by diblock copolymer masks Small scale lateral superlattices in two-dimensional electron gases prepared by diblock copolymer masks

2008-06-24

arxiv.org/abs/0806.3896v2

Appl. Phys. Lett. 93, 102110 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 3 figures

Scientific paper

10.1063/1.2981567

A poly(styrene-block-methylmethacrylate) diblock copolymer in the hexagonal cylindrical phase has been used as a mask for preparing a periodic gate on top of a Ga[Al]As-heterostructure. A superlattice period of 43 nm could be imposed onto the two-dimensional electron gas. Transport measurements show a characteristic positive magnetoresistance around zero magnetic field which we interpret as a signature of electron motion guided by the superlattice potential.

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