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Voltage and dephasi...
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Foerster, Heidi
(författare)
Voltage and dephasing probes in mesoscopic conductors: A study of full-counting statistics
- Artikel/kapitelEngelska2007
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LIBRIS-ID:oai:lup.lub.lu.se:051e9f8d-3828-4ffb-bc87-c398a3620625
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https://lup.lub.lu.se/record/674960URI
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https://doi.org/10.1103/PhysRevB.75.035340DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Voltage and dephasing probes introduce incoherent inelastic and incoherent quasielastic scattering into a coherent mesoscopic conductor. We discuss in detail the concepts of voltage and dephasing probes and develop a full-counting statistics approach to investigate their effect on the transport statistics. The formalism is applied to several experimentally relevant examples. A comparison of different probe models and with procedures like phase averaging over an appropriate phase distribution shows that there is a perfect equivalence between the models for the case of one single-channel probe. Interestingly, the appropriate phase-distribution function is found to be uniform. A uniform distribution is provided by a chaotic cavity with a long dwell time. The dwell time of a chaotic cavity plays a role similar to the charge response time of a voltage or dephasing probe. For multichannel or multiple probes the transport statistics of voltage and dephasing probes differs and the equivalence with phase averaging is similarly lost.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Samuelsson, PeterLund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)teor-psa
(författare)
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Pilgram, Sebastian
(författare)
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Buettiker, Markus
(författare)
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Matematisk fysikFysiska institutionen
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Physical Review B (Condensed Matter and Materials Physics)75:31098-0121
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