TY  - JOUR
AU  - Kashid, Vikas
AU  - Shah, Vaishali
AU  - Salunke, H. G.
AU  - Mokrousov, Yuriy
AU  - Blügel, Stefan
TI  - Magnetic properties of 2D nickel nanostrips: structure dependent magnetism and Stoner criterion
JO  - Journal of physics / Condensed matter
VL  - 27
IS  - 31
SN  - 1361-648X
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2015-05116
SP  - 316002
PY  - 2015
AB  - We have investigated different geometries of two-dimensional (2D) infinite length Ni nanowires of increasing width using spin density functional theory calculations. Our simulations demonstrate that the parallelogram motif is the most stable and structures that incorporate the parallelogram motif are more stable as compared to rectangular structures. The wires are conducting and the conductance channels increase with increasing width. The wires have a non-linear behavior in the ballistic anisotropic magnetoresistance ratios (BAMR) with respect to the magnetization directions. All 2D nanowires as well as Ni (1 1 1) and Ni (1 0 0) monolayer investigated are ferromagnetic under the Stoner criterion and exhibit enhanced magnetic moments as compared to bulk Ni and the respective Ni monolayers. The easy axis for all nickel nanowires under investigation is observed to be along the wire axis. The double rectangular nanowire exhibits a magnetic anomaly with a smaller magnetic moment when compared to Ni (1 0 0) monolayer and is the only structure with an easy axis perpendicular to the wire axis. The Stoner parameter which has been known to be structure independent in bulk and surfaces is found to vary with the structure and the width of the nanowires. The less stable rectangular and rhombus shaped nanowires have a higher ferromagnetic strength than parallelogram shaped nanowires.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000358595500014
DO  - DOI:10.1088/0953-8984/27/31/316002
UR  - https://juser.fz-juelich.de/record/203081
ER  -