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Field-driven and Spin-transfer-torque-driven Domain-Wall Dynamics
Englisch
136 b
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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.
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Englisch
