Transport spin polarization of Ni_xFe_{1-x}: electronic kinematics and band structure

We present measurements of the transport spin polarization of Ni_xFe_{1-x} (0<x<1) using the recently-developed Point Contact Andreev Reflection technique, and compare them with our first principles calculations of the spin polarization for this system. Surpisingly, the measured spin polarization is almost composition-independent. The results clearly demonstrate that the sign of the transport spin polarization does not coincide with that of the difference of the densities of states at the Fermi level. Calculations indicate that the independence of the spin polarization of the composition is due to compensation of density of states and Fermi velocity in the s- and d- bands

State, society and market in the aftermath of natural disasters in colonial India: a preliminary exploration

How did South Asian societies rebuild their economies following natural disasters? Based on five episodes from colonial India, this article suggests that between the mid-nineteenth and the mid-twentieth century, the response to disasters changed from laissez-faire to more state intervention. Despite this change, post-disaster rebuilding was complicated by unspecified rights to lost property, conflicting claims to property, asymmetric information between aid-givers and receivers, conflicts between agencies, lack of cooperation between gainers and losers, and in some of these examples, clashes between the colonial state and nationalist organisations