Field-driven and Spin-transfer-torque-driven Domain-Wall Dynamics : in Ferromagnetic Micro-/Nano- structures

ISBN-13: 9783639135862 / Angielski / Miękka / 2009 / 100 str.

Shuqiang Yang

Opis

The main topic of this book is to exploremagnetic-field- and electric-current-drivendomain-wall motion in thin-film-based magneticmicrostructures. Conventional thin-film growth andmicrostructure fabrication techniques includingelectron-beam lithography and focused ion beammilling are used to fabricate nanometer-scaleone-dimensional and two-dimensional magneticstructures that support magnetic domains (regions ofdifferent magnetization orientation separated bydomain walls). A high-spatial resolution,high-temporal resolution technique for measuring thefield- or current- driven dynamics of the domainwalls, based on the magneto-optic Kerr effect, isdeveloped and used to study the wall dynamics.Domain-wall motion driven by (spin-polarized)electric current is studied in nano-scale thin-filmbased wires. The experiments address issuespertaining to the basic mechanisms responsible forcurrent-driven domain-wall motion, which are believedto be the adiabatic spin-torque mechanism andnon-adiabatic mechanisms.

O autorze

Shuqiang Yang obtained his Bachelor of Science in Physics in 1996
from Shandong University and Master of Science degree in
Electronics in 1999 from Institute of Physics, Chinese Academy of
Science. In 2007 he obtained his PhD degree in physics at the
University of Texas at Austin. Currently, he is postdoctoral
fellow at the same University.