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

S. Hugger; T. Heinzel; T. Thurn-Albrecht

doi:10.1063/1.2981567

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arXiv · 0806.3896

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

S. Hugger·T. Heinzel·T. Thurn-Albrecht

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Abstract

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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S. Hugger, T. Heinzel, T. Thurn-Albrecht. 2008-06-24. Small scale lateral superlattices in two-dimensional electron gases prepared by diblock copolymer masks. https://doi.org/10.1063/1.2981567

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