DOI:https://doi.org/10.1103/PhysRevLett.94.179901
©2005 American Physical Society
A. Ferretti, A. Calzolari, R. Di Felice, F. Manghi, M. J. Caldas, M. Buongiorno Nardelli, and E. Molinari
Vol. 94, Iss. 17 — 6 May 2005
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