Absorption spectroscopy in electron double layers: evidence for broken symmetry states

Absorption spectroscopy in electron double layers: evidence for broken symmetry states
M. J. Manfra, B. B. Goldberg, J. C. Pniower, A. Pinczuk, V Pelligrini, L. N. Pfeiffer, and K. W. West.. Physica A 6 1-4, 590-593 [PDF]