Boone, C. T., Katine, J. A., Carey, M., Childress, J. R., Cheng, X., Krivorotov, I. N.
Recent experiments show that domain walls (DW) in metallic ferromagnetic nanowires can be moved with current flowing along the nanowire. We make measurements of DW dynamics in permalloy nanowires...
Experimental Test of Analytic Theory of Spin Torque Oscillator Dynamics (2008)
Boone, C., Katine, J. A., Childress, J. R., Zhu, J., Cheng, X., Krivorotov, I. N.
We make measurements of power spectral density of the microwave voltage emitted by a spin torque nano-oscillator (STNO) and compare our experimental results to predictions of an analytic theory of a...
Carey, M. J., Smith, Neil, Maat, S., Childress, J. R.
It is shown that the maximum stable output of a CPP-GMR sensor is increased significantly by using a synthetic ferrimagnet free layer, provided the electron current flows from free layer to reference...
Maat, S., Smith, N., Carey, M. J., Childress, J. R.
We demonstrate that the addition of Dy capping layers in current perpendicular to the plane giant magneto-resistive spin-valves can increase the critical current density beyond which spin-torque...
Briones, J., Montaigne, F., Lacour, Daniel, Hehn, M., Carey, M. J., Childress, J. R.
The propagation of a domain wall in a submicron ferromagnetic spin-valve stripe is investigated using giant magnetoresistance. A notch in the stripe efficiently traps an injected wall stopping the...
Keatley, P. S., Kruglyak, V. V., Neudert, A., Galaktionov, E. A., Hicken, R. J., Childress, J. R., ...
We have performed time-resolved scanning Kerr microscopy (TRSKM) measurements upon arrays of square ferromagnetic nano-elements of different size and for a range of bias fields. The experimental...
Nanoscale heat conduction across tunnel junctions (2005)
Ju, Y. Sungtaek, Hung, M T, Carey, M J, Cyrille, M C, Childress, J R
Nanoscale heat conduction across tunnel junctions prepared through natural oxidation of metal electrodes is experimentally studied. The thermal resistance of AlOx tunnel barriers increases linearly...
Lacour, D., Katine, J. A., Smith, N., Carey, M. J., Childress, J. R.
We have developed a self-aligned, high-yield process to fabricate CPP (current perpendicular to the plane) magnetic sensors of sub 100 nm dimensions. A pinned synthetic antiferromagnet (SAF) is used...
Lacour, D., Katine, J. A., Folks, L., Block, T., Childress, J. R., Carey, M. J., ...
The presence of a domain wall trapped by a sub-micron notch is probed in two ways: through electronic transport measurements and by Magnetic Force Microscopy (MFM). We observe complex magnetic...
Ferromagnetic resonance force microscopy on microscopic cobalt single layer films (1998)
Zhang, Z., Hammel, P. C., Midzor, M., Roukes, M. L., Childress, J. R.
We report mechanical detection of ferromagnetic resonance (FMR) signals from microscopic Co single layer thin films using a magnetic resonance force microscope (MRFM). Variations in the magnetic...
Ferromagnetic resonance force microscopy on microscopic cobalt single layer films (1998)
Zhang, Z., Hammel, P. C., Midzor, M., Roukes, M. L., Childress, J. R.
We report mechanical detection of ferromagnetic resonance signals from microscopic Co single layer thin films using a magnetic resonance force microscope (MRFM). Variations in the magnetic anisotropy...
Ferromagnetic resonance imaging of Co films using magnetic resonance force microscopy (1998)
Suh, B. J., Hammel, P. C., Zhang, Z., Midzor, M. M., Roukes, M. L., Childress, J. R.
Suppressors of a UGG missense mutation in Escherichia coli.
As part of our investigation of tRNA structure-function relationships, we isolated and preliminarily characterized translational suppressors of the tryptophan codon UGG in a trpA missense mutant of...
Suppressors of a UGG missense mutation in Escherichia coli.
As part of our investigation of tRNA structure-function relationships, we isolated and preliminarily characterized translational suppressors of the tryptophan codon UGG in a trpA missense mutant of...