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Excitonic states of ZnSe detected by microwave‐modulated reflectivity
Author(s) -
Wolverson D.,
Smith L. C.,
Bingham S. J.,
Davies J. J.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200564688
Subject(s) - exciton , microwave , magnetic circular dichroism , electron , heterojunction , condensed matter physics , excitation , semiconductor , magnetic field , conduction band , limiting , materials science , optoelectronics , chemistry , physics , spectral line , mechanical engineering , quantum mechanics , astronomy , engineering
Signals ascribed to the 1s, 2s and 3s exciton states of epitaxial ZnSe are observed in experiments aimed at detecting the coherent spin‐flip of conduction band electrons under simultaneous microwave and laser excitation of a ZnSe sample in a magnetic field. The origin of these unexpected signals is investigated, since they must arise from non‐idealities in the experiment which could represent a limiting factor in its application to semiconductor heterostructures. It is shown that both magnetic circular dichroism and magnetic linear dichroism effects could lead to the observation of such signals. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)