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Journal article
Tuning Noncollinear Spin Structure and Anisotropy in Ferromagnetic Nitride MXenes
ACS nano, v 12(6), pp 6319-6325
26 Jun 2018
PMID: 29883093
Abstract
Recent experimental success in the realization of two-dimensional magnetism has invigorated the search for low-dimensional material systems with tunable magnetic anisotropy that exhibit intrinsic long-range ferromagnetic order. Here we report that modifying the surface termination and transition metal in monolayer M
NT
nitride MXenes gives rise to a rich diversity of noncollinear spin structures and finely tunable magnetocrystalline anisotropy. Based on first-principles simulations, we predict that manipulating the strength of the spin-orbit interaction and electron localization via the chemical degrees of freedom can induce sufficient anisotropy to counteract thermal fluctuations that suppress long-range magnetic order. We find that Ti
NO
and Mn
NF
MXenes have continuous O(3) and O(2) spin symmetries, respectively, that may be broken by an applied field, while Cr
NO
and Mn
NO
are intrinsic Ising ferromagnets with out-of-plane easy axes and magnetic anisotropy energies up to 63 μeV/atom. These systems also exhibit both gapped and gapless Dirac points near the Fermi level. Our study suggests that nitride MXenes offer a promising avenue for achieving both practical spintronic devices and investigating fundamental spin processes in two-dimensional materials.
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Details
- Title
- Tuning Noncollinear Spin Structure and Anisotropy in Ferromagnetic Nitride MXenes
- Creators
- Nathan C Frey - Department of Materials Science and Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United StatesHemant Kumar - Department of Materials Science and Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United StatesBabak Anasori - Department of Materials Science and Engineering and A.J. Drexel Nanomaterials Institute , Drexel University , Philadelphia , Pennsylvania 19104 , United StatesYury Gogotsi - Department of Materials Science and Engineering and A.J. Drexel Nanomaterials Institute , Drexel University , Philadelphia , Pennsylvania 19104 , United StatesVivek B Shenoy - Department of Materials Science and Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
- Publication Details
- ACS nano, v 12(6), pp 6319-6325
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000436910200132
- Scopus ID
- 2-s2.0-85048733723
- Other Identifier
- 991014970046004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology