Ballistic electron spectroscopy
F. Hohls, M. Pepper, J. P. Griffiths, G. A. C. Jones, and D. A., Ritchie
TL;DR
This paper introduces ballistic electron spectroscopy as a novel technique for probing non-equilibrium electrons in mesoscopic systems, using quantum dots as energy-selective detectors and injectors to explore interactions in low-dimensional electron systems.
Contribution
It demonstrates the feasibility of using quantum dots for ballistic electron spectroscopy and proposes its application in studying interacting 1D and 0D electron systems.
Findings
Quantum dots can serve as effective energy-selective detectors.
A second quantum dot can be used as an electron injector.
The scheme enables exploration of interactions in low-dimensional systems.
Abstract
We demonstrate the feasibility of ballistic electron spectroscopy as a new tool for mesoscopic physics. A quantum dot is utilised as an energy-selective detector of non-equilibrium ballistic electrons injected into a two-dimensional electron system. In this paper we use a second quantum dot as the electron injector to evaluate the scheme. We propose an application in the study of interacting 1D and 0D systems.
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