First data at 37.5 tesla

HFML has produced the first experimental data in its new 37.5-T magnet. We have measured the fractional quantum Hall effect in the high-mobility two-dimensional electron system of a GaAs/GaAlAs heterostructure (ETH Zürich). We used a home-built 3He system with an in-situ rotation mechanism. Everything has functioned excellently and the system is now ready to be used for further experiments.

First data in 37.5 tesla

Fractional quantum Hall effect in the magneto-resistance (left) and the Hall resistance (right) of a high-mobility two dimensional electron system.