Benchmarking Current-to-Voltage Amplifiers for Quantum Transport Measurements
J. Escorza, G. Pellicer, T. de Ara, J. Hurtado-Gallego, E. Scheer + 2 more
TLDR
This paper systematically benchmarks four current-to-voltage amplifier architectures for quantum transport measurements, providing design guidelines.
Key contributions
- Systematically designed and analyzed four I-V amplifier architectures.
- Optimized architectures for break junction techniques (STM-BJ, MCBJ).
- Evaluated each configuration based on sensitivity, noise performance, and dynamic range.
- Provided practical guidelines for selecting optimal amplification schemes in quantum transport.
Why it matters
This paper offers a robust framework and practical guidelines for selecting current-to-voltage amplification schemes. This is crucial for accurate measurements in molecular electronics and quantum transport experiments, where currents span many orders of magnitude. The systematic comparison helps researchers optimize their experimental setups.
Original Abstract
Accurate electrical amplification is essential in molecular electronics for measuring conductance through atomic and molecular junctions, where currents often span several orders of magnitude. In this work, we present a systematic design and comparative analysis of four current-to-voltage ($I\text{--}V$) amplifier architectures: single-stage linear, series-linear, logarithmic, and multi-stage cascaded, specifically optimized for break junction (BJ) techniques, including scanning tunneling microscopy (STM-BJ) and mechanically controllable break junctions (MCBJ). Each configuration is evaluated based on sensitivity, noise performance, and dynamic range. Our results characterize the trade-offs between circuit complexity and noise, providing a robust framework and practical guidelines for selecting amplification schemes in quantum transport experiments.
📬 Weekly AI Paper Digest
Get the top 10 AI/ML arXiv papers from the week — summarized, scored, and delivered to your inbox every Monday.