scholarly journals Internal modes and magnon scattering on topological solitons in two-dimensional easy-axis ferromagnets

2001 ◽  
Vol 64 (2) ◽  
Author(s):  
Denis D. Sheka ◽  
Boris A. Ivanov ◽  
Franz G. Mertens
Keyword(s):  
Easy Axis ◽  
Two Dimensional ◽  
Topological Solitons

Dynamic topological solitons in a two-dimensional ferromagnet

1999 ◽  
Vol 88 (4) ◽  
pp. 833-843 ◽  
Author(s):  
A. A. Zhmudskii ◽  
B. A. Ivanov
Keyword(s):  
Two Dimensional ◽  
Topological Solitons

Giant magnetic anisotropy of a two-dimensional metal–dicyanoanthracene framework

Nanoscale ◽  
2018 ◽  
Vol 10 (36) ◽  
pp. 17335-17340 ◽  
Author(s):  
Yun Zhang ◽  
Zhao Wei ◽  
Meiguang Zhang ◽  
Xiao Gu ◽  
Li Huang
Keyword(s):  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Two Dimensional ◽  
2D Ir

A huge MAE up to 180 meV is found in a 2D Ir–DCA framework with the easy axis perpendicular to the sheet.

Easy axis distribution in two‐dimensional recording media

1995 ◽  
Vol 67 (19) ◽  
pp. 2881-2883 ◽  
Author(s):  
R. Iglesias ◽  
J. M. G. Merayo ◽  
H. Rubio
Keyword(s):  
Easy Axis ◽  
Recording Media ◽  
Two Dimensional

scholarly journals High-throughput computational screening for two-dimensional magnetic materials based on experimental databases of three-dimensional compounds

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Daniele Torelli ◽  
Hadeel Moustafa ◽  
Karsten W. Jacobsen ◽  
Thomas Olsen
Keyword(s):  
Magnetic Materials ◽  
Density Functional ◽  
Easy Axis ◽  
Three Dimensional ◽  
Inorganic Crystal Structure Database ◽  
Two Dimensional ◽  
Magnetic Exchange ◽  
Antiferromagnetic Materials ◽  
Computational Screening ◽  
Crystallography Open Database

Abstract We perform a computational screening for two-dimensional (2D) magnetic materials based on experimental bulk compounds present in the Inorganic Crystal Structure Database and Crystallography Open Database. A recently proposed geometric descriptor is used to extract materials that are exfoliable into 2D derivatives and we find 85 ferromagnetic and 61 antiferromagnetic materials for which we obtain magnetic exchange and anisotropy parameters using density functional theory. For the easy-axis ferromagnetic insulators we calculate the Curie temperature based on a fit to classical Monte Carlo simulations of anisotropic Heisenberg models. We find good agreement with the experimentally reported Curie temperatures of known 2D ferromagnets and identify 10 potentially exfoliable 2D ferromagnets that have not been reported previously. In addition, we find 18 easy-axis antiferromagnetic insulators with several compounds exhibiting very strong exchange coupling and magnetic anisotropy.

First-principles study of uniaxial strain-stabilized long-range ferromagnetic ordering in electrenes

2021 ◽  
Author(s):  
Jun Zhou ◽  
Xiaohe Song ◽  
Ming Yang ◽  
J. W. Chai ◽  
Lai Mun Wong ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Long Range ◽  
First Principles ◽  
Easy Axis ◽  
Magnetic Ordering ◽  
Uniaxial Strain ◽  
Two Dimensional ◽  
First Principles Study ◽  
Ferromagnetic Ordering

Few two-dimensional (2D) magnets have an intrinsic easy axis, which is essential for a long-range magnetic ordering for applications. Here, we show that without external magnetic fields, uniaxial strains can...

LONG-RANGE ORDER IN TWO-DIMENSIONAL XXZ MODEL

2009 ◽  
Vol 23 (09) ◽  
pp. 2195-2201
Author(s):  
WEN-LONG YOU
Keyword(s):  
Long Range ◽  
Easy Axis ◽  
Range Order ◽  
Sufficient Condition ◽  
Long Range Order ◽  
Two Dimensional ◽  
Reflection Positivity ◽  
Xxz Model

In the present paper, by applying the reflection positivity method due to Dyson, Lieb, and Simon, we rigorously establish the sufficient condition for existence of the Néel long-range order (NLRO) in two-dimensional spin-1/2 XXZ. Our result shows that if the anisotropic coupling Δ satisfies 0 ≤ Δ ≤ 0.30 or Δ ≥ 1.52, the existence of the NLRO along easy axis is proved.

scholarly journals Correlation-driven eightfold magnetic anisotropy in a two-dimensional oxide monolayer

2020 ◽  
Vol 6 (15) ◽  
pp. eaay0114 ◽  
Author(s):  
Zhangzhang Cui ◽  
Alexander J. Grutter ◽  
Hua Zhou ◽  
Hui Cao ◽  
Yongqi Dong ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Uniaxial Anisotropy ◽  
Spin Reorientation ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Orbital Ordering ◽  
Magnetic Easy Axis ◽  
Spin Orbit Interactions ◽  
Spin Switching

Engineering magnetic anisotropy in two-dimensional systems has enormous scientific and technological implications. The uniaxial anisotropy universally exhibited by two-dimensional magnets has only two stable spin directions, demanding 180° spin switching between states. We demonstrate a previously unobserved eightfold anisotropy in magnetic SrRuO3 monolayers by inducing a spin reorientation in (SrRuO3)1/(SrTiO3)N superlattices, in which the magnetic easy axis of Ru spins is transformed from uniaxial 〈001〉 direction (N < 3) to eightfold 〈111〉 directions (N ≥ 3). This eightfold anisotropy enables 71° and 109° spin switching in SrRuO3 monolayers, analogous to 71° and 109° polarization switching in ferroelectric BiFeO3. First-principle calculations reveal that increasing the SrTiO3 layer thickness induces an emergent correlation-driven orbital ordering, tuning spin-orbit interactions and reorienting the SrRuO3 monolayer easy axis. Our work demonstrates that correlation effects can be exploited to substantially change spin-orbit interactions, stabilizing unprecedented properties in two-dimensional magnets and opening rich opportunities for low-power, multistate device applications.

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