J. B. Betts

Metal-to-insulator crossover in the low-temperature normal state of Bi(2)Sr(2-x)La(x)CuO(6+delta).

We measure the normal-state in-plane resistivity of Bi(2)Sr(2-x)La(x)CuO(6+delta) single crystals at low temperatures by suppressing superconductivity with 60 T pulsed magnetic fields. With decreasing hole doping, we observe a crossover from a metallic to an insulating behavior in the low-temperature normal state. This crossover is estimated to occur near 1/8 doping, well inside the underdoped regime, and not at optimum doping as reported for other cuprates. The insulating regime is marked by a logarithmic temperature dependence of the resistivity over two decades of temperature, suggesting that a peculiar charge localization is common to the cuprates.

Heat capacity through the magnetic-field-induced resistive transition in an underdoped high-temperature superconductor

for an Invited Paper for the MAR11 Meeting of The American Physical Society Quantum Oscillations and High Magnetic Field Heat Capacity in Underdoped YBCO GREGORY BOEBINGER, National High Magnetic Field Laboratory This abstract not available.

Heavy-fermion behavior, crystalline electric field effects, and weak ferromagnetism in Sm Os 4 Sb 12

The filled skutterudite compound

Bounding the pseudogap with a line of phase transitions in YBa2Cu3O6+δ.

\mathrm{Sm}{\mathrm{Os}}_{4}{\mathrm{Sb}}_{12}

Quasiparticle mass enhancement approaching optimal doping in a high-Tc superconductor

was prepared in single-crystal form and characterized using x-ray diffraction, specific-heat, electrical resistivity, and magnetization measurements. The

Low field magnetotransport properties of (La0.7Sr0.3MnO3)0.5:(ZnO)0.5 nanocomposite films

\mathrm{Sm}{\mathrm{Os}}_{4}{\mathrm{Sb}}_{12}

Ferromagnetism and possible heavy-fermion behavior in single crystals of Nd Os 4 Sb 12

crystals have the

Diamond’s elastic stiffnesses from 322 K to 10 K

\mathrm{La}{\mathrm{Fe}}_{4}{\mathrm{P}}_{12}

Cascade of magnetic field induced spin transitions in LaCoO3.

-type structure with lattice parameter

Effects of unreacted Mg impurities on the transport properties of MgB2

a=9.3085\phantom{\rule{0.3em}{0ex}}\mathrm{\AA{}}