Nearly noninvasive readout and manipulation of spin in double quantum dot using spin bias Hai-Zhou Lu, Rong Lü and Shun-Qing Shen Eur. Phys. J. B, 83 1 (2011) 69-75 Published online: 12 September 2011 DOI: 10.1140/epjb/e2011-10648-6