Systematic measurements of temperature-dependent magnetization, resistivity, and angle-resolved photoemission spectroscopy (ARPES) at ambient pressure as well as resistivity under pressures up to 5.25 GPa were conducted on single crystals of CrAuTe4. Magnetization data suggest that magnetic moments are aligned antiferromagnetically along the crystallographic c axis below TN=255 K. ARPES measure...

We show that when bulk graphene breaks into n-type and p-type puddles, the in-plane resistivity becomes strongly field dependent in the presence of a perpendicular magnetic field even if homogeneous graphene has a field-independent resistivity. We calculate the longitudinal resistivity xx and Hall resistivity xy as a function of field for this system using the effective-medium approximation. Th...

i Preface iii Summary v Introduction 1 Measurement techniques employed 3 Ground 3 Airborne 3 Magnetometer survey 4 Results 4 Ground control study 4 VLF survey 8 Bedrock geology and resistivity 8 Aeromagnetic survey results 13 Conclusions 13 Literature cited 13 Appendix A. Theory of electromagnetic resistivity si rveying 15 Appendix B. Magnetic surveying 19

We present three-dimensional magnetohydrodynamic simulations of the nonlinear evolution of the magnetorotational instability (MRI) with a non-zero Ohmic resistivity. The simulations begin from a homogeneous (unstratified) density distribution, and use the local shearing-box approximation. The evolution of a variety of initial field configurations and strengths is considered, for several values ...

2014 Fairly detailed and accurate data is presented for the Hall resistivity (03C1H), temperature derivative (d03C1H/dT), electrical resistivity (p), and derivative d03C1/dT in a ferromagnetic Tb75-Gd25 polycrystalline alloy, over a wide range of temperatures (77-360 K). Magnetic susceptibility data (~) near and above the Curie point is also included. The different contributions to the electric...

Structural study by means of x-ray powder diffraction and Laue technique show that UIrGe crystallizes in the orthorhombic TiNiSi-type structure. Magnetic measurements reveal a huge magnetic anisotropy in UIrGe with the hard magnetization axis along the a axis, i.e., along the direction of U-U zig-zag chains. Comprehensive magnetic, electrical-transport, thermopower, and thermal studies on a sin...

The antiferromagnetic transition is investigated in the rare-earth (R) tritelluride RTe3 family of charge density wave (CDW) compounds via specific heat, magnetization and resistivity measurements. Observation of the opening of a superzone gap in the resistivity of DyTe3 indicates that additional nesting of the reconstructed Fermi surface in the CDW state plays an important role in determining ...

The magnetic Prandtl number PrM is the ratio of viscosity to resistivity. In astrophysical disks the diffusion of angular momentum (viscosity) and magnetic fields (resistivity) are controlled by turbulence. Phenomenological models of the evolution of large scale poloidal magnetic fields in disks suggest that the turbulent magnetic Prandtl number PrM,T controls the rate of escape of vertical fie...

The importance of magnetic reconnection as an energy release mechanism in many solar, stellar, magnetospheric and astrophysical phenomena has long been recognised. Reconnection is the only mechanism by which magnetic fields can globally restructure, enabling them to access a lower energy state. Over the past decade, there have been some major advances in our understanding of threedimensional re...