TY - RPRT TI - Probing the potential landscape inside a two-dimensional electron Gas AU - JJ Koonen AU - H Buhmann AU - LW Molenkamp PY - 2000 DO - 10.1103/physrevlett.84.2473 UR - https://pubmed.ncbi.nlm.nih.gov/11018913/ ID - 11018913 ER -