Hanbury Brown and Twiss exchange correlations in a graphene box
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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9
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Physical Review B, Volume 100, issue 23, pp. 1-9
Abstract
Quadratic detection in linear mesoscopic transport systems produces cross terms that can be viewed as interference signals reflecting statistical properties of charge carriers. In electronic systems these cross-term interferences arise from exchange effects due to Pauli principle. Here we demonstrate fermionic Hanbury Brown and Twiss (HBT) exchange phenomena due to indistinguishability of charge carriers in a diffusive graphene system. These exchange effects are verified using current-current cross-correlations in combination with regular shot noise (autocorrelation) experiments at microwave frequencies. Our results can be modeled using semiclassical analysis for a square-shaped metallic diffusive conductor, including contributions from contact transparency. The experimentally determined HBT exchange factor values lie between the calculated ones for coherent and hot electron transport.Description
| openaire: EC/H2020/670743/EU//QuDeT
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Elo, T, Tan, Z, Padurariu, C, Duerr, F, Golubev, D S, Lesovik, G B & Hakonen, P 2019, 'Hanbury Brown and Twiss exchange correlations in a graphene box', Physical Review B, vol. 100, no. 23, 235433, pp. 1-9. https://doi.org/10.1103/PhysRevB.100.235433