High Bias Transport and Magnetometer Design in Open Quantum Dots
arXiv:cond-mat/9708224 · doi:10.1063/1.120789
Abstract
We report transport measurements as a function of bias in open semiconductor quantum dots. These measurements are well described by an effective electron temperature derived from Joule heating at the point contacts and cooling by Wiedemann-Franz out-diffusion of thermal electrons. Using this model, we propose and analyze a quantum dot based sensor which measures absolute magnetic field at micron scales with a noise floor of at 300 mK.
10 pages including 3 figures