Current-driven domain wall dynamics and its electric signature in ferromagnetic nanowires /

Bibliographic Details
Main Author: Liu, Yang
Other Authors: Abanov, Artem (Thesis advisor), Sinova, Jairo (Thesis advisor)
Format: Thesis eBook
Language:English
Published: [College Station, Tex.] : [Texas A&M University], [2012]
Subjects:
Online Access:Link to OAK Trust copy

MARC

Tag First Indicator Second Indicator Subfields
LEADER 00000cam a2200000Ka 4500
001 in00002784496
005 20150922145933.0
006 m fo d
007 cr unu||||||||
008 121126s2012 txu obm 000 0 eng d
035 |a (OCoLC)ocn819343646 
035 |a (OCoLC)819343646 
035 |a (TxCM)http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9980 
040 |a TXA  |c TXA  |d UtOrBLW 
049 |a TXAM 
099 |a 2011  |a Thesis  |a 1969.1/ETD-TAMU-2011-08-9980 
100 1 |a Liu, Yang. 
245 1 0 |a Current-driven domain wall dynamics and its electric signature in ferromagnetic nanowires /  |c by Yang Liu. 
264 1 |a [College Station, Tex.] :  |b [Texas A&M University],  |c [2012] 
300 |a 1 online resource. 
336 |a text  |b txt  |2 rdacontent 
337 |a computer  |b c  |2 rdamedia 
338 |a online resource  |b cr  |2 rdacarrier 
500 |a "Major Subject: Physics" 
588 |a Description from author supplied metadata (automated record created 2012-10-22 13:24:58). 
502 |b Master of Science  |c Texas A&M University  |d 2011  |o http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9980 
504 |a Includes bibliographical references. 
516 |a Text (Thesis) 
520 3 |a We study current-induced domain wall dynamics in a thin ferromagnetic nanowire. We derive the effective equations of domain wall motion, which depend on the wire geometry and material parameters. We describe the procedure to determine these parameters by all-electric measurements of the time-dependent voltage induced by the domain wall motion. We provide an analytical expression for the time variation of this voltage. Furthermore, we show that the measurement of the proposed effects is within reach with current experimental techniques. We also show that a certain resonant time-dependent current moving a domain wall can significantly reduce the Joule heating in the wire, and thus it can lead to a novel proposal for the most energy efficient memory devices. We discuss how Gilbert damping, non-adiabatic spin transfer torque, and the presence of Dzyaloshinskii-Moriya interaction can effect this power optimization. Furthermore, we propose a new nanodot magnetic device. We derive a specific time-dependent current that is needed to switch the magnetization of the nanodot the most efficiently. 
500 |a Electronic resource. 
650 4 |a Major Physics. 
653 |a Domain wall dynamics 
653 |a Domain wall dynamics measurement 
653 |a Power optimization 
653 |a Dzyaloshinskii-Moriya interaction 
653 |a Current-driven domain wall 
653 |a Spin transfer torque 
653 |a Domain wall 
653 |a Nanodot flipping 
653 |a Ferromagnetic nanowire 
700 1 |a Abanov, Artem,  |e thesis advisor. 
700 1 |a Sinova, Jairo,  |e thesis advisor. 
856 4 0 |u http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9980  |z Link to OAK Trust copy  |t 0 
948 |a cataloged  |b h  |c 2012/11/26  |d o  |e jolivare  |f 2:46:01 pm 
994 |a C0  |b TXA 
999 |a MARS 
999 f f |s b7d22c5c-843e-3541-af73-e1800bee3cea  |i c09f6474-1e3c-35fb-bd90-d086bcde14b8  |t 0 
952 f f |a Texas A&M University  |b College Station  |c Electronic Resources  |s www_evans  |d Available Online  |t 0  |e 2011 Thesis 1969.1/ETD-TAMU-2011-08-9980  |h Other scheme 
998 f f |a 2011 Thesis 1969.1/ETD-TAMU-2011-08-9980  |t 0  |l Available Online