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@ARTICLE{Yan:14467,
author = {Yan, M. and Kakay, A. and Gliga, S. and Hertel, R.},
title = {{B}eating the {W}alker limit with massless domain walls in
cylindrical nanowires},
journal = {Physical review letters},
volume = {104},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-14467},
pages = {057201},
year = {2010},
note = {Record converted from VDB: 12.11.2012},
abstract = {We present a micromagnetic study on the current-induced
domain-wall motion in cylindrical Permalloy nanowires with
diameters below 50 nm. The transverse domain walls forming
in such thin, round wires are found to differ significantly
from those known from flat nanostrips. In particular, we
show that these domain walls are zero-mass micromagnetic
objects. As a consequence, they display outstanding dynamic
properties, most importantly the absence of a breakdown
velocity generally known as the Walker limit. Our simulation
data are confirmed by an analytic model which provides a
detailed physical understanding. We further predict that a
particular effect of the current-induced dynamics of these
domain walls could be exploited to measure the nonadiabatic
spin-transfer torque coefficient.},
keywords = {J (WoSType)},
cin = {IFF-9},
ddc = {550},
cid = {I:(DE-Juel1)VDB789},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Physics, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000274336800045},
doi = {10.1103/PhysRevLett.104.057201},
url = {https://juser.fz-juelich.de/record/14467},
}