3+1 magnetodynamics

31-3

Magnetodynamics in Spin Valves and Magnetic Tunnel Junctions with Perpendicular and Tilted Anisotropies

..................................................................................... iii Acknowledgement ........................................................................ v Table of

Theory of magnetodynamics induced by spin torque in perpendicularly magnetized thin films.

A nonlinear model of spin-wave excitation using a point contact in a thin ferromagnetic film is introduced. Large-amplitude magnetic solitary waves are computed, which help explain recent spin-torque experiments. Numerical simulations of the fully nonlinear model predict excitation frequencies in excess of 0.2 THz for contact diameters smaller than 6 nm. Simulations also predict a saturation an...

Neuro 31

Down syndrome is the most frequent genetic cause of mental retardation. Although usually presenting dysmorphic features and organ malformations, it is rarely associated with congenital hydrocephalus. The case of male neonate whose hydrocephalus was detected since the pregnancy and was discovered to have the syndrome at birth is reported. Chromosomal analysis confirmed the genetic disorder, and ...

Number 31

Last year, when d~cussing the 1979 Nobel prizewinners, we introduced a new term-of Nobel class. 1 One major indicator that a scientist is of Nobel class is the publication of several papers of high impact. More often than not, when consistently cited for a long period, such papers can be identified with major breakthroughs. Let’s see whether this is true of the 1980 Nobel prizewinners, and if n...