Projects per year
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.
Original language | English |
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Article number | 235433 |
Pages (from-to) | 1-9 |
Number of pages | 9 |
Journal | Physical Review B |
Volume | 100 |
Issue number | 23 |
DOIs | |
Publication status | Published - 18 Dec 2019 |
MoE publication type | A1 Journal article-refereed |
Keywords
- SHOT-NOISE
- SCATTERING
- CONDUCTIVITY
- UNIVERSALITY
- INTERFERENCE
- TRANSPORT
Fingerprint
Dive into the research topics of 'Hanbury Brown and Twiss exchange correlations in a graphene box'. Together they form a unique fingerprint.Projects
- 5 Finished
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Finnish Centre of Excellence in Quantum Technology
Hakonen, P. (Principal investigator)
01/01/2018 → 31/12/2020
Project: Academy of Finland: Other research funding
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BOLOSO: Ultrasensitive bolometers for security applications
Hakonen, P. (Principal investigator)
01/01/2018 → 31/08/2022
Project: Academy of Finland: Other research funding
Equipment
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OtaNano – Low Temperature Laboratory
Savin, A. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility