TY - JOUR AU - Penn, David AU - Stiles, Mark C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 2005-12-15 LA - en M1 - 72 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 2005 TI - Spin Transport for Spin Diffusion Lengths Comparable to Mean Free Paths ER -