Next Article in Journal
Surfactant-Free Synthesis of Nb2O5 Nanoparticles Anchored Graphene Nanocomposites with Enhanced Electrochemical Performance for Supercapacitor Electrodes
Previous Article in Journal
Synergistic Radiosensitization by Gold Nanoparticles and the Histone Deacetylase Inhibitor SAHA in 2D and 3D Cancer Cell Cultures
Open AccessArticle

Substrate-Controlled Magnetism: Fe Nanowires on Vicinal Cu Surfaces

1
Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
2
Institut für Physik, Martin-Luther-Universität, Halle-Wittenberg, Von Seckendorff Platz 1, D-06120 Halle, Germany
3
Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(1), 159; https://doi.org/10.3390/nano10010159
Received: 15 December 2019 / Revised: 8 January 2020 / Accepted: 10 January 2020 / Published: 16 January 2020
Here we present a novel approach to controlling magnetic interactions between atomic-scale nanowires. Our ab initio calculations demonstrate the possibility to tune magnetic properties of Fe nanowires formed on vicinal Cu surfaces. Both intrawire and interwire magnetic exchange parameters are extracted from density functional theory (DFT) calculations. This study suggests that the effective interwire magnetic exchange parameters exhibit Ruderman–Kittel–Kasuya–Yosida-like (RKKY) oscillations as a function of Fe interwire separation. The choice of the vicinal Cu surface offers possibilities for controlling the magnetic coupling. Furthermore, an anisotropic Heisenberg model was used in Monte Carlo simulations to examine the stability of these magnetic configurations at finite temperatures. The predicted critical temperatures of the Fe nanowires on Cu(422) and Cu(533) surfaces are well above room temperature.
Keywords: magnetism; ab initio; Monte Carlo simulations; nanowires magnetism; ab initio; Monte Carlo simulations; nanowires
MDPI and ACS Style

Hashemi, D.; Waters, M.J.; Hergert, W.; Kieffer, J.; Stepanyuk, V.S. Substrate-Controlled Magnetism: Fe Nanowires on Vicinal Cu Surfaces. Nanomaterials 2020, 10, 159.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop