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Communication Dans Un Congrès Année : 2019

Single-electron excitations and interactions in integer quantum Hall systems at ν = 2

Résumé

We study the interplay between few-electron excitations generated by voltage pulses and interactions in a quantum Hall system at integer filling factor ν = 2. Electronelectron interactions strongly affect the dynamics of the generated pulses, leading to their fractionalization. In particular, on the innermost edge channel two oppositely charged excitations emerge, which we analyze through their Wigner function. Moreover, we show that interactions provide a signature in the noise generated when these excitations are partitioned by a quantum point contact connecting opposite edges. We compare different shapes of the external drive and we discuss the most convenient in order to extract information about the so-called mixing angle, encoding the strength of interactions between edge channels.
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Dates et versions

hal-03509529 , version 1 (04-01-2022)

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Matteo Acciai, Matteo Carrega, Jérôme Rech, Thibaut Jonckheere, Dario Ferraro, et al.. Single-electron excitations and interactions in integer quantum Hall systems at ν = 2. 13th Workshop on Low Temperature Electronics, Sep 2018, Sorrento, Italy. pp.012003, ⟨10.1088/1742-6596/1182/1/012003⟩. ⟨hal-03509529⟩
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