Figure 3.

Power-dependence spin diffusion coefficient and spin lifetime. (a) Spin diffusion coefficient Ds versus pump power, i.e., spin density; the blue line is a simple fit according to <a onClick="popup('http://www.nanoscalereslett.com/content/6/1/149/mathml/M8','MathML',630,470);return false;" target="_blank" href="http://www.nanoscalereslett.com/content/6/1/149/mathml/M8">View MathML</a>. (b) Pump power-dependent spin lifetime through Kerr rotation measurement with a fixed probe power of 0.2 mW.

Hu et al. Nanoscale Research Letters 2011 6:149   doi:10.1186/1556-276X-6-149
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