scholarly journals Computer Simulation of Magnetic Skyrmions

Proceedings ◽  
2019 ◽  
Vol 46 (1) ◽  
pp. 6
Author(s):  
Vitalii Kapitan ◽  
Egor Vasiliev ◽  
Alexander Perzhu
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Computer Simulation ◽  
External Magnetic Field ◽  
Single Layer ◽  
Metropolis Algorithm ◽  
Square Lattice ◽  
Temperature Behaviour ◽  
Magnetic Skyrmions ◽  
Moriya Interaction

In this paper, we present the results of a numerical simulation of thermodynamics for the array of Classical Heisenberg spins placed on a 2D square lattice, which effectively represents the behaviour of a single layer. Using the Metropolis algorithm, we show the temperature behaviour of the system with a competing Heisenberg and Dzyaloshinskii–Moriya interaction (DMI) in contrast with the classical Heisenberg system. We show the process of nucleation of the skyrmion depending on the value of the external magnetic field. We proposed the controlling method for the movement of skyrmions.

scholarly journals Thermodynamic properties of Heisenberg spin systems on a square lattice with the Dzyaloshinskii--Moriya interaction

2020 ◽  
Vol 20 (1) ◽  
pp. 63-73
Author(s):  
Vitalii Kapitan ◽  
◽  
Egor Vasiliev ◽  
Yuriy Shevchenko ◽  
Alexander Perzhu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
External Magnetic Field ◽  
Thermodynamic Properties ◽  
Spin Systems ◽  
Square Lattice ◽  
Temperature Behaviour ◽  
Heisenberg Spin ◽  
Moriya Interaction

We present results of numerical simulation of thermodynamics for array of Classical Heisenberg spins placed on 2D square lattice. By using Metropolis and Wang--Landau methods we show the temperature behaviour of system with competing Heisenberg and Dzyaloshinskii--Moriya interaction (DMI) in contrast with classical Heisenberg system. We show the process of nucleating of skyrmion depending on the value of external magnetic field.

scholarly journals Generation of magnetic skyrmions through pinning effect

2019 ◽  
Vol 33 (02) ◽  
pp. 1950040 ◽  
Author(s):  
Ji-Chong Yang ◽  
Qing-Qing Mao ◽  
Yu Shi
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Anisotropy ◽  
Interaction Strength ◽  
Lattice Simulation ◽  
Pinning Effect ◽  
Ferromagnetic Exchange ◽  
Analytical Estimation ◽  
Magnetic Skyrmions ◽  
Moriya Interaction

Based on analytical estimation and lattice simulation, a proposal is made that magnetic skyrmions can be generated through the pinning effect in 2D chiral magnetic materials, in the absence of an external magnetic field or magnetic anisotropy. In our simulation, stable magnetic skyrmions can be generated in the pinning areas. The properties of the skyrmions are studied for various values of ferromagnetic exchange strength and the Dzyaloshinskii–Moriya interaction strength.

Monte Carlo Simulation of Magnetic Skyrmions in Ferromagnetic Films

2020 ◽  
Vol 312 ◽  
pp. 256-260
Author(s):  
Alexander Perzhu ◽  
Egor Vasiliev ◽  
Dmitrii Kapitan ◽  
Roman Volotovskiy ◽  
Alexey Rybin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
External Magnetic Field ◽  
Magnetic Films ◽  
Magnetic Vortex ◽  
Heisenberg Spin ◽  
Monte Carlo Simulation Technique ◽  
Magnetic Skyrmions ◽  
Moriya Interaction

Magnetic films, in which magnetic vortex textures - skyrmions appear because of competition between the direct Heisenberg exchange and the Dzyaloshinskii-Moriya interaction, were studied using the Monte-Carlo simulation technique. The conditions for the nucleation and stable existence of magnetic skyrmions in magnetic films in the frame of the classical Heisenberg model were considered in the paper. The process of nucleation of skyrmions with increasing of the external magnetic field was studied, various phases into which the Heisenberg spin system passes were recognized. A phase diagram was plotted: it shows the behavior of the system at the constant value of temperature depending on values of an external magnetic field and Dzyaloshinskii-Moriya interaction.

Orbital response of single-layer antimony to external magnetic field

2020 ◽  
Vol 102 (15) ◽  
Author(s):  
G. V. Pushkarev ◽  
I. A. Iakovlev ◽  
D. A. Prishchenko ◽  
E. A. Stepanov ◽  
V. V. Mazurenko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Single Layer

Quantum teleportation via two-qubit Heisenberg XYZ chain

2014 ◽  
Vol 92 (5) ◽  
pp. 406-410 ◽  
Author(s):  
Nour Zidan
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quantum Teleportation ◽  
Initial System ◽  
Entangled State ◽  
Initial State ◽  
Intrinsic Decoherence ◽  
Average Fidelity ◽  
Moriya Interaction

Quantum teleportation via the entanglement channel composed of a two-qubit Heisenberg XYZ chain with Dzyaloshinskii–Moriya interaction in the presence of both inhomogeneous external magnetic field and intrinsic decoherence has been investigated. It is shown that the initial state of the channel plays an important role in the fully entangled fraction and the average fidelity of teleportation. It is found that when the initial system is in the entangled state |Ψ⟩ = m2|01⟩ + n2|10⟩ the corresponding average fidelity is always larger than 2/3.

The effects of intra-dimer Dzyaloshinsky–Moriya interaction on the properties of SrCu2(BO3)2in an external magnetic field

2004 ◽  
Vol 16 (11) ◽  
pp. S911-S916 ◽  
Author(s):  
S Miyahara ◽  
F Mila ◽  
K Kodama ◽  
M Takigawa ◽  
M Horvatic ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Moriya Interaction

scholarly journals Numerical simulation of graphene in an external magnetic field

2014 ◽  
Vol 89 (24) ◽  
Author(s):  
D. L. Boyda ◽  
V. V. Braguta ◽  
S. N. Valgushev ◽  
M. I. Polikarpov ◽  
M. V. Ulybyshev
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
External Magnetic Field
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