Heat conduction in the vortex state of NbSe2: evidence for multiband superconductivity

The thermal conductivity kappa of the layered s-wave superconductor NbSe2 was measured down to T(c)/100 throughout the vortex state. With increasing field, we identify two regimes: one with localized states at fields very near H(c1) and one with highly delocalized quasiparticle excitations at higher fields. The two associated length scales are naturally explained as multiband superconductivity, with distinct small and large superconducting gaps on different sheets of the Fermi surface. This behavior is compared to that of the multiband superconductor MgB2 and the conventional superconductor V3Si.

State health expenditure accounts: Minnesota's perspective

Minnesota's approach to the development and use of State health expenditure accounts (SHEAs) was developed to assist State policymakers with decisions regarding health care reform. The accounts are based on an annual survey of third-party payers and summary Medicaid and Medicare data. Summary data are presented along with a discussion of data collection methodology, estimation, and dissemination. Minnesota's experience demonstrates that the ability of States to conduct detailed analysis of health care spending and to use these estimates to change State policy, inform national policy debate, conduct impact analysis, educate policymakers, and monitor market trends.