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Dynamics of Long-Living Excitons in Tunable Potential Landscapes

Andreas Gartner·Dieter Schuh·Jorg P. Kotthaus
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Abstract

A novel method to experimentally study the dynamics of long-living excitons in coupled quantum well semiconductor heterostructures is presented. Lithographically defined top gate electrodes imprint in-plane artificial potential landscapes for excitons via the quantum confined Stark effect. Excitons are shuttled laterally in a time-dependent potential landscape defined by an interdigitated gate structure. Long-range drift exceeding a distance of 150 um at an exciton drift velocity > 1000 m/s is observed in a gradient potential formed by a resistive gate stripe.

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Andreas Gartner, Dieter Schuh, Jorg P. Kotthaus. 2005-09-06. Dynamics of Long-Living Excitons in Tunable Potential Landscapes. https://doi.org/10.1016/j.physe.2005.12.036

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