Details
| Original language | English |
|---|---|
| Article number | 127701 |
| Journal | Physical review letters |
| Volume | 124 |
| Issue number | 12 |
| Publication status | Published - 27 Mar 2020 |
| Externally published | Yes |
Abstract
We demonstrate the trapping of electrons propagating ballistically at far-above-equilibrium energies in GaAs/AlGaAs heterostructures in high magnetic field. We find low-loss transport along a gate-modified mesa edge in contrast to an effective decay of excess energy for the loop around a neighboring, mesa-confined node, enabling high-fidelity trapping. Measuring the full counting statistics via single-charge detection yields the trapping (and escape) probabilities of electrons scattered (and excited) within the node. Energetic and arrival-time distributions of captured electron wave packets are characterized by modulating tunnel barrier transmission.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 124, No. 12, 127701, 27.03.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Trapping and Counting Ballistic Nonequilibrium Electrons
AU - Freise, Lars
AU - Gerster, Thomas
AU - Reifert, David
AU - Weimann, Thomas
AU - Pierz, Klaus
AU - Hohls, Frank
AU - Ubbelohde, Niels
N1 - Funding information: We gratefully acknowledge MBE operation by H. Marx and discussions with D. Maradan and V. Kashcheyevs. This work was supported in part by the Joint Research Project “SEQUOIA” (17FUN04). This project has received funding from the European Metrology Programme for Innovation and Research (EMPIR) co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme. We additionally acknowledge support by DFG within cluster of excellence EXC-2123 “QuantumFrontiers” – 390837967.
PY - 2020/3/27
Y1 - 2020/3/27
N2 - We demonstrate the trapping of electrons propagating ballistically at far-above-equilibrium energies in GaAs/AlGaAs heterostructures in high magnetic field. We find low-loss transport along a gate-modified mesa edge in contrast to an effective decay of excess energy for the loop around a neighboring, mesa-confined node, enabling high-fidelity trapping. Measuring the full counting statistics via single-charge detection yields the trapping (and escape) probabilities of electrons scattered (and excited) within the node. Energetic and arrival-time distributions of captured electron wave packets are characterized by modulating tunnel barrier transmission.
AB - We demonstrate the trapping of electrons propagating ballistically at far-above-equilibrium energies in GaAs/AlGaAs heterostructures in high magnetic field. We find low-loss transport along a gate-modified mesa edge in contrast to an effective decay of excess energy for the loop around a neighboring, mesa-confined node, enabling high-fidelity trapping. Measuring the full counting statistics via single-charge detection yields the trapping (and escape) probabilities of electrons scattered (and excited) within the node. Energetic and arrival-time distributions of captured electron wave packets are characterized by modulating tunnel barrier transmission.
UR - http://www.scopus.com/inward/record.url?scp=85083546504&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.124.127701
DO - 10.1103/PhysRevLett.124.127701
M3 - Article
C2 - 32281866
AN - SCOPUS:85083546504
VL - 124
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 12
M1 - 127701
ER -