REFLECTION OF BALLISTIC ELECTRONS FROM DIFFUSIVE REGIONS

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Abstract

We have investigated reflection of edge states from the boundary between a disordered region and a high-mobility region of a two-dimensional electron gas. alpha-particle bombardment has been employed to reduce selectively the mobility. We observe an exponential increase in reflection of the innermost edge state from the disordered region as the temperature decreases. The results are explained in terms of the Milne reflection of electrons which are elastically scattered back before thermalization can occur.
Original languageEnglish
JournalPhysical Review B
Volume49
Issue number3
Pages (from-to)2265-2268
ISSN2469-9950
Publication statusPublished - 1994
Externally publishedYes

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