Field-driven and Spin-transfer-torque-driven Domain-Wall Dynamics

The main topic of this book is to explore
magnetic-field- and electric-current-driven
domain-wall motion in thin-film-based magnetic
microstructures. Conventional thin-film growth and
microstructure fabrication techniques including
electron-beam lithography and focused ion beam
milling are used to fabricate nanometer-scale
one-dimensional and two-dimensional magnetic
structures that support magnetic domains (regions of
different magnetization orientation separated by
domain walls). A high-spatial resolution,
high-temporal resolution technique for measuring the
field- or current- driven dynamics of the domain
walls, based on the magneto-optic Kerr effect, is
developed and used to study the wall dynamics.
Domain-wall motion driven by (spin-polarized)
electric current is studied in nano-scale thin-film
based wires. The experiments address issues
pertaining to the basic mechanisms responsible for
current-driven domain-wall motion, which are believed
to be the adiabatic spin-torque mechanism and
non-adiabatic mechanisms.

Autorentext

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

Klappentext

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.