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IOP Publishing, Semiconductor Science and Technology, 5(26), p. 055010, 2011

DOI: 10.1088/0268-1242/26/5/055010

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Generation of energy selective excitations in quantum Hall edge states

Journal article published in 2010 by C. Leicht, P. Mirovsky, B. Kaestner, F. Hohls, V. Kashcheyevs ORCID, E. V. Kurganova, U. Zeitler, T. Weimann, K. Pierz, H. W. Schumacher
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We operate an on-demand source of single electrons in high perpendicular magnetic fields up to 30T, corresponding to a filling factor below 1/3. The device extracts and emits single charges at a tunable energy from and to a two-dimensional electron gas, brought into well defined integer and fractional quantum Hall (QH) states. It can therefore be used for sensitive electrical transport studies, e.g. of excitations and relaxation processes in QH edge states.