Meth in Allegan County -- Spreading to West Michigan?

According to the Office of National Drug Policy, White House, about 1.3 million people used meth in the year 2002. Moreover, in 2001, 607,000 people used methamphetamine. The University of Arkansas reports that businesses in Benton County were losing an estimated $21 million annually because of meth, mainly due to absenteeism and lost productivity. Methamphetamine is a profoundly addictive drug that seriously affects health, families, businesses, social services, and the environment. Why is meth use on the increase

Photoinduced magnetism in the ferromagnetic semiconductors

We study the enhancement of the magnetic transition temperature $T_c$ due to incident light in ferromagnetic semiconductors such as EuS. The photoexcited carriers mediate an extra ferromagnetic interaction due to the coupling with the localized magnetic moments. The Hamiltonian consists of a Heisenberg model for the localized moments and an interaction term between the photoexcited carriers and the localized moments. The model predicts a small enhancement of the transition temperature in semi-quantitative agreement with the experiments.Comment: 5 pages, 5 figure