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Title: | Conductance anomalies in quantum point contacts | Authors: | Frucci, Giulia | Keywords: | electronic transport , quantum point contact , valley splitting | Issue Date: | 26-Jul-2009 | Publisher: | IEEE | Pages: | 190-193 | Abstract: | We present a study of the conductance of quantum point contacts fabricated in AlGaN/GaN and Si/SiGe heterostructures. The investigated devices differ for typology (split gates and etched devices, respectively) and for the resulting potential profiles. We observe conductance quantization in multiple of 2e2/h units with superimposed anomalous plateaus and/or structures suggesting that correlation effects should be included in the description of our 1D systems. | URI: | http://hdl.handle.net/2307/385 | ISSN: | 1944-9399 |
Appears in Collections: | X_Dipartimento di Fisica 'Edoardo Amaldi' ATC - Atti di Convegno |
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