CRRES High Energy Proton Flux Maps. (9999)
Gussenhoven, M. S., Mullen, E. G., Violet, M. D., Hein, C., Bass, J., Madden, D.
Proton flux maps of near-Earth space are presented using the Proton Telescope (PROTEL) detector on CRRES. The proton energy range covered is 1 - 100 MeV. Contamination of PROTEL measurements due to >...
Spin-Diffusion Lengths in Dilute Cu(Ge) and Ag(Sn) Alloys (2008)
Fowler, Q., Richard, B., Sharma, A., Theodoropoulou, N., Loloee, R., Pratt Jr., W. P., ...
We use current-perpendicular-to-plane (CPP) exchange-biased spin-valves to directly measure spin diffusion lengths lsf for N = Cu(2.1 at.%Ge) and Ag(3.6 at.%Sn) alloys. We find lsf(Cu2%Ge)) =...
Studies of Effects of Current on Exchange-Bias: A Brief Review (2008)
Bass, J., Sharma, A., Wei, Z., Tsoi, M.
MacDonald and co-workers recently predicted that high current densities could affect the magnetic order of antiferromagnetic (AFM) multilayers, in ways similar to those that occur in ferromagnetic...
Current-Induced Magnetoresistance in Antiferromagnetic Spin Valves (2007)
Wei, Z., Sharma, A., Bass, J., Tsoi, M.
This paper has been withdrawn. The results of measurements on new samples of different types call into question our explanation in the original version of the paper. A revised version will appear...
Ballistic vs Diffusive Transport in Current-Induced Magnetization Switching (2007)
Theodoropoulou, N., Sharma, A., Pratt Jr, W. P., Bass, J., Stiles, M. D., Xiao, J.
We test whether current-induced magnetization switching due to spin-transfer-torque in ferromagnetic/non-magnetic/ferromagnetic (F/N/F) trilayers changes significantly when scattering within the...
Spin transfer in an antiferromagnet (2006)
Wei, Z., Sharma, A., Nunez, A. S., Haney, P. M., Duine, R. A., Bass, J., ...
An electrical current can transfer spin angular momentum to a ferromagnet. This novel physical phenomenon, called spin transfer, offers unprecedented spatial and temporal control over the magnetic...
Comparison of Measured and Calculated Specific Resistances of Pd/Pt Interfaces (2005)
Olson, S. K., Loloee, R., Theodoropoulou, N., Pratt Jr., W. P., Bass, J.
We compare specific resistances (AR equals area A times resistance R) of sputtered Pd/Pt interfaces measured in two different ways with no-free-parameter calculations. One way gives 2AR(Pd/Pt) of...
Pd/Ag and Pd/Au interface specific resistances and interfacial spin flipping (2005)
Galinon, C., Tewolde, K., Loloee, R., Olson, S., Kurt, H., ...
CRRES Electric Field Power Spectra and Radial Diffusion Coefficients (2005)
Brautigam, D. H., Ginet, G. P., Albert, J. M., Wygant, J. R., Rowland, D. E., Ling, A., ...
Combined Release and Radiation Effects Satellite (CRRES) Electric Field Instrument (EFI) data are used to determine the electric field power spectral density as a function of L and Kp over the...
Manipulating Current-Induced Magnetization Switching (2004)
Urazhdin, S., Kurt, H., AlHajDarwish, M., Birge, Norman O., Pratt Jr., W. P., Bass, J.
We summarize our recent findings on how current-driven magnetization switching and magnetoresistance in nanofabricated magnetic multilayers are affected by varying the spin-scattering properties of...
Current-Induced Magnetization Switching in Permalloy-based Nanopillars with Cu, Ag, and Au (2004)
Kurt, H., Loloee, R., Pratt Jr., W. P., Bass, J.
We compare magnetoresistances (MR) and switching currents (I_s) at room temperature (295K) and 4.2K for Permalloy/N/Permalloy nanopillars undergoing current-induced magnetization switching (CIMS),...
Changes in magnetic scattering anisotropy at a ferromagnetic/superconducting interface (2004)
Eid, K., Kurt, H., Pratt Jr., W. P., Bass, J.
We show that some metals and alloys (X = Cu, Ag, FeMn, or Cu and Ag combined with each other), sputtered between ferromagnetic Co and superconducting Nb, produce no change in...
AlHajDarwish, M., Kurt, H., Urazhdin, S., Fert, A., Loloee, R., Pratt Jr., W. P., ...
Combining pairs of ferromagnetic metals with different signs of scattering anisotropies, let us independently invert the magnetoresistance and the direction of current-driven switching in...
Current-Driven Switching in Magnetic Multilayer Nanopillars (2003)
Urazhdin, S., Birge, Norman O., Pratt Jr., W. P., Bass, J.
We summarize our recent findings on how the current-driven magnetization switching in nanofabricated magnetic multilayers is affected by an applied magnetic field, changes of temperature, magnetic...
Studies of dc Current-Driven Switching in Py/N/Py magnetic nanopillars (2003)
Urazhdin, S., Pratt Jr., W. P., Bass, J.
We provide new data on current-driven switching in Permalloy (Py = Ni84Fe16) based nanopillars at room temperature and 4.2K that confirm and extend previously published work. We present data for both...
Inverted current-driven switching in Fe(Cr)/Cr/Fe(Cr) nanopillars (2003)
AlHajDarwish, M., Fert, A., Pratt Jr, W. P., Bass, J.
From both theory and experiment, scattering of minority electrons is expected to be weaker than scattering of majority electrons in both dilute Fe(Cr) alloys and at Fe(Cr)/Cr interfaces. We show that...
Current-driven excitations in magnetic multilayers: a brief review (2003)
Bass, J., Urazhdin, S., Birge, Norman O., Pratt Jr, W. P.
In 1996, Berger and Slonczewski independently predicted that a large enough spin-polarized dc current density sent perpendicularly through a ferromagnetic layer could produce magnetic excitations...
Studies of Current-Driven Excitations in Co/Cu/Co Trilayer Nanopillars (2003)
Urazhdin, S., Birge, Norman O., Pratt Jr, W. P., Bass, J.
We measure the dynamic resistance of a Co/Cu/Co trilayer nanopillar at varied magnetic field $H$ and current $I$. The resistance displays the usual behavior, almost symmetric in $H$, both when...
Switching Current vs. Magnetoresistance in Magnetic Multilayer Nanopillars (2003)
Urazhdin, S., Birge, Norman O., Pratt Jr., W. P., Bass, J.
We study current-driven magnetization switching in nanofabricated magnetic trilayers, varying the magnetoresistance in three different ways. First, we insert a strongly spin-scattering layer between...
Effect of Interlayer Coupling on Current-Assisted Magnetization Switching in Nanopillars (2003)
Urazhdin, S., Pratt Jr, W. P., Bass, J.
We show that dipole-field induced antiferromagnetic coupling, or RKKY ferromagnetic coupling, between Co layers can strongly affect the low magnetic field switching behavior of Co/Cu/Co nanopillars....
Effect of Antiferromagnetic Interlayer Coupling on Current-Assisted Magnetization Switching (2003)
Urazhdin, S., Kurt, H., Pratt Jr, W. P., Bass, J.
We compare magnetization switching in Co/Cu/Co nanopillars with uncoupled and dipole-field coupled Co layers. In uncoupled nanopillars, current-driven switching is hysteretic at low magnetic field H...
Current-Driven Magnetic Excitations in Permalloy-Based Multilayer Nanopillars (2003)
Urazhdin, S., Birge, Norman O., Pratt Jr, W. P., Bass, J.
We study current-driven magnetization switching in nanofabricated Ni84Fe16/Cu/Ni84Fe16 trilayers at 295 K and 4.2 K. The shape of the hysteretic switching diagram at low magnetic field changes from...
Current-driven resonances in magnetic multilayers (2002)
Tsoi, M., Tsoi, V., Bass, J., Jansen, A. G. M., Wyder, P.
We describe complex variations in resistance of a Co/Cu multilayer, generated by injection of an adjustable dc current density (similar to10(9) A/cm(2)) via a point contact. We attribute these...
Groundwater Contamination Response Guide. Volume 1. Methodology. (1998)
Guswa,J. H., Lyman,W. J., Adams,J., Bass,J., Brecher,A.
This report documents an overview of groundwater hydrology and a current technology review of equipment, methods, and techniques used in groundwater field investigations. Numerous topics applicable...
Groundwater Contamination Response Guide. Volume 2. Desk Reference. (1998)
Guswa,J. H., Lyman,W. J., Adams,J., Bass,J., Brecher,A.
This technical report documents an overview of groundwater hydrology and a current technology review of equipment, methods, and techniques used in groundwater field investigations. Numerous topics...
CRRES High Energy Proton Flux Map. (1998)
Gussenhoven, M. S., Mullen, E. G., Hein, C., Bass, J., Madden, D.
Proton flux maps of near-Earth space are presented using the Proton Telescope (PROTEL) detector on CRRES. The proton energy range covered is 1 - 100 MeV. Contamination of PROTEL measurements due to >...
CRRES Electric Field Power Spectra and Radial Diffusion Coefficients (1998)
Brautigam, D. H., Ginet, G. P., Albert, J. M., Wygant, J. R., Rowland, D. E., Ling, A., ...
Combined Release and Radiation Effects Satellite (CRRES) Electric Field Instrument (EFI) data are used to determine the electric field power spectral density as a function of L and Kp over the...
Excitation of a magnetic multilayer by an electric current. (1998)
Tsoi, M. V., Jansen, A., Bass, J., Seck, M., Tsoi, V. S., ...
Mixed Fidelity Simulation Technology Development. (1997)
Gossage, B., Roark, W., Bass, J., Kyser, J., Salazar, D.
Mixed models with different levels of fidelity within the same simulation present a difficult challenge to simulation developers and users. Very often, changes in fidelity impose changes in the model...
OBSERVED AND PREDICTED MANY-BODY EFFECTS IN THERMOELECTRICITY IN METALS (1978)
A review is given of observed and predicted many-body effects in thermoelectricity in metals. The possibility of isolating terms which are not yet well understood is discussed.
OBSERVED AND PREDICTED MANY-BODY EFFECTS IN THERMOELECTRICITY IN METALS (1978)
A review is given of observed and predicted many-body effects in thermoelectricity in metals. The possibility of isolating terms which are not yet well understood is discussed.
OBSERVED AND PREDICTED MANY-BODY EFFECTS IN THERMOELECTRICITY IN METALS (1978)
A review is given of observed and predicted many-body effects in thermoelectricity in metals. The possibility of isolating terms which are not yet well understood is discussed.
Bass, J, Fisher, E A, Prack, M M, Williams, D L, Marsh, J B
The effects of the nephrotic syndrome in rats on the cholesterol content and the biosynthesis of apolipoprotein E (apoE) by resident peritoneal macrophages have been investigated. Since the nephrotic...
Inhibition of human polymorphonuclear leukocyte chemotaxis by oxygenated sterol compounds.
Gordon, L I, Bass, J, Yachnin, S
When preincubated with certain oxygenated sterol compounds in lipoprotein-depleted serum [20% (vol/vol)], human polymorphonuclear leukocytes show inhibition of chemotaxis toward the synthetic...
Bass, J, Fisher, E A, Prack, M M, Williams, D L, Marsh, J B
The effects of the nephrotic syndrome in rats on the cholesterol content and the biosynthesis of apolipoprotein E (apoE) by resident peritoneal macrophages have been investigated. Since the nephrotic...
Inhibition of human polymorphonuclear leukocyte chemotaxis by oxygenated sterol compounds.
Gordon, L I, Bass, J, Yachnin, S
When preincubated with certain oxygenated sterol compounds in lipoprotein-depleted serum [20% (vol/vol)], human polymorphonuclear leukocytes show inhibition of chemotaxis toward the synthetic...
Zunino, S. J., Singh, M. K., Bass, J., Picker, L. J.
By coupling intracellular staining with terminal deoxynucleotidyl transferase (TdT)-mediated labeling of internucleosomal DNA strand breaks in a flow cytometric assay, we observed a strong...