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Donor impurity-related linear and nonlinear intraband optical absorption coefficients in quantum ring: effects of applied electric field and hydrostatic pressure

Manuk G Barseghyan, Ricardo L Restrepo, Miguel E Mora-Ramos, Albert A Kirakosyan and Carlos A Duque*

Nanoscale Research Letters 2012, 7:538  doi:10.1186/1556-276X-7-538