The Manfra low temperature lab performs electrical characterization of two-dimensional electron gases in GaAs/AlGaAs heterostructures. The primary focus is on research related to the fractional quantum Hall effect (FQHE). Quick characterization of material and devices is performed with a home-made 4K dipper probe equipped with a 2 Tesla magnet while more complete measurements can be made at 300 mK in a Janis He3 cryostat equipped with a 9 Tesla superconducting magnet. Installation of an Oxford Kelvinox He3/He4 dilution refrigerator with a 15 Tesla magnet is also underway which will allow lower (T < 50 mK) temperature examination of FQHE states and measurement of their energy gaps.
http://manfragroup.org/wp-content/uploads/2014/12/Holy-Mobility-John-Watson-main_result.jpg 2514 1800 admin http://manfragroup.org/wp-content/uploads/2014/12/clear-box.png admin2014-12-17 19:31:362014-12-18 20:00:35Low Temperature Measurement Lab