Research output: Contribution to journal › Journal article
|<mark>Journal publication date</mark>||15/10/1992|
|<mark>Journal</mark>||Physical Review B|
|Number of pages||5|
Exchange enhancement of the Landau-level separation of up to 30% has been observed in three high mobility GaAs/Ga1-xAlxAs single heterojunctions. Analysis of the amplitude of Shubnikov-de Haas oscillations as a function of temperature and magnetic field has allowed measurement of this enhancement at filling factors as high as nu = 100.