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E. Mattern,1 J. Matas,1 Y. Ricard2 and J. Bass3 1Laboratoire de Sciences de la Terre, CNRS UMR 5570, Ecole normale supérieure de Lyon, 46, allée d’Italie, 69364 Lyon cedex 07, France. E-mails: estelle.mattern@ens-lyon.fr and jan.matas@ens-lyon.fr 2Laboratoire de Sciences de la Terre, CNRS UMR 5570, Université Claude Bernard Lyon1, 43Bd du 11novembre, Bat.(More)
We show that a high-density electric current, injected from a point contact into an exchange-biased spin valve, systematically changes the exchange bias. The bias can either increase or decrease depending upon the current direction. This observation is not readily explained by the well-known spin-transfer torque effect in ferromagnetic metal circuits, but(More)
The melting curve of iron, the primary constituent of Earth's core, has been measured to pressures of 250 gigapascals with a combination of static and dynamic techniques. The melting temperature of iron at the pressure of the core-mantle boundary (136 gigapascals) is 4800 +/- 200 K. whereas at the inner core-outer core boundary (330 gigapascals), it is 7600(More)
By combining pairs of ferromagnetic metals with the same or different signs of scattering anisotropies in ferromagnetic-nonmagnetic-ferromagnetic metal nanopillars, we independently invert just the magnetoresistance, just the direction of current-induced magnetization switching, or both together, at room temperature (295 K) and at 4.2 K. In all cases(More)
We have used current-perpendicular-to-plane magnetoresistance measurements of Py-based exchange-biased spin-valves containing IrMn inserts of thickness <i>t</i> to estimate the spin-flipping probability of the antiferromagnet IrMn. From <i>t</i>=0 to <i>t</i>= 1 nm, we find a rapid decrease in <i>A¿R</i>=<i>A</i>(<i>RAP</i> - <i>RP</i>) , by about a factor(More)
Using current-perpendicular-to-plane (CPP) magnetoresistance measurements, we derive values of twice the enhanced interface resistance, 2AR<sub>F/N</sub>* and the interface scattering asymmetry, ¿<sub>F/N</sub>, the ferromagnetic/non-magnetic (F/N) pairs Ni/Ru and Co<sub>90</sub>Fe<sub>10</sub>/Cu. For Ni/Ru, we find 2AR<sub>NI/Ru</sub>* =(More)
Re(CO)3 conjugates 1 and 2 that incorporate azobenzenes can be readily generated via one-pot reactions using Schiff base reaction forming conditions. Excitation of the MLCT bands in 1 and 2 results in isomerization of the azobenzene moiety, and this process has been investigated via time-resolved photophysics and TDDFT calculations.
N. Theodoropoulou, A. Sharma, W.P. Pratt Jr., and J. Bass Department of Physics and Astronomy, Center for Fundamental Materials Science, and Center for Sensor Materials, Michigan State University, East Lansing, MI 48824-2320, USA Mark Stiles, Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, MD(More)
A brother and sister had renal, neurological and thyroid disease; both with normal mentality. The sister presented at one year of age with evidence of renal disease (BUN 35 mg/dl). At age 9 neurological deterioration, muscle wasting, ataxia and myoclonus developed. Diffuse goiter was present (T4 RIA 5.0 μg/dl; thyroid microsomal antibodies 1:100; I131(More)
We describe complex variations in resistance of a Co/Cu multilayer, generated by injection of an adjustable dc current density ( approximately 10(9) A/cm(2)) via a point contact. We attribute these variations to coupling of current-induced spin waves to lattice vibrations, leading especially to current-driven resonant excitations of phonons. We propose a(More)