TY - JOUR AU - Maurizia Palummo AU - Federico Iori AU - Rodolfo Del Sole AU - Stefano Ossicini BT - Phys. Rev. B DA - Mar DO - 10.1103/PhysRevB.81.121303 M1 - 12 PB - American Physical Society PY - 2010 EP - 121303 T2 - Phys. Rev. B TI - Giant excitonic exchange splitting in Si nanowires: First-principles calculations VL - 81 ER -