Browsing by Author "Cheng, Tin S."
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Direct band-gap crossover in epitaxial monolayer boron nitride
Beton, Peter (The University of Nottingham, 2019-06-28)Hexagonal boron nitride is a large band-gap insulating material which complements the electronic and optical properties of graphene and the transition metal dichalcogenides. However, the intrinsic optical properties of ... -
Giant moiré patterns and lattice-matched epitaxial graphene grown
Summerfield, Alex; Davies, Andrew; Beton, Peter; Diez Albar, Juan; Thomas, James; Cheng, Tin s. (The University of Nottingham, 2018-01-01)Lattice-matched graphene on hexagonal boron nitride is expected to lead to the formation of a band-gap but requires the formation of highly strained material and has not hitherto been realised. We demonstrate that aligned, ... -
Moiré-modulated conductance of hexagonal boron nitride tunnel barriers
Summerfield, Alex (The University of Nottingham, 2018-07-16)Monolayer hexagonal boron nitride (hBN) tunnel barriers investigated using conductive atomic force microscopy reveal moiré patterns in the spatial maps of their tunnel conductance consistent with the formation of a moiré ...