Houdré, R.Hermann, C.Lampel, G.Frijlink, P. M.Gossard, A. C.2007-08-312007-08-312007-08-31198510.1103/PhysRevLett.55.734https://infoscience.epfl.ch/handle/20.500.14299/10960Photoemission from a superlattice and single quantum welltext::journal::journal article::research article