Aharanov-Bohm excitons at elevated temperatures in type-II ZnTe/ZnSe quantum dots

Details Aharanov-Bohm excitons at elevated temperatures in type-II ZnTe/ZnSe quantum dots Aharanov-Bohm excitons at elevated temperatures in type-II ZnTe/ZnSe quantum dots

2007-10-23

arxiv.org/abs/0710.4308v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.100.136405

Optical emission from type-II ZnTe/ZnSe quantum dots demonstrates large and persistent oscillations in both the peak energy and intensity indicating the formation of coherently rotating states. Furthermore, the Aharanov-Bohm (AB) effect is shown to be remarkably robust and persists until 180K. This is at least one order of magnitude greater than the typical temperatures in lithographically defined rings. To our knowledge this is the highest temperature at which the AB effect has been observed in semiconductor structures.

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