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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Localized spin excitations in an antiferromagnetic spin system with D-M interaction
T Evangeline Rebecca1, M M Latha1
1Department of Physics, Women's Christian College, Nagercoil 629 001, India.
Chaos (Woodbury, N.Y.)
|July 3, 2016
Summary
Localized spin excitations in one-dimensional antiferromagnets with Dzyaloshinski-Moriya interaction were studied. The research identified one, two, and three solitary wave solutions, offering insights into spin dynamics.
Area of Science:
- Condensed Matter Physics
- Quantum Magnetism
- Nonlinear Dynamics
Background:
- One-dimensional (1D) magnetic systems exhibit unique quantum phenomena.
- The Dzyaloshinski-Moriya (D-M) interaction introduces complex spin behaviors.
- Understanding localized spin excitations is crucial for novel magnetic materials.
Purpose of the Study:
- To investigate localized spin excitations and deviations in 1D antiferromagnets with D-M interaction.
- To derive and analyze the dynamic equations governing these spin systems.
- To explore the existence and characteristics of solitary wave solutions.
Main Methods:
- Quasiclassical approximation applied to spin operators.
- Holstein-Primakoff bosonic representation for spin operators.
- Time-dependent variational principle and coherent state ansatz.
- Multiple-scale method for solving nonlinear partial differential equations.
Main Results:
- A discrete set of coupled nonlinear partial differential equations was derived.
- One, two, and three solitary wave solutions were successfully constructed.
- Graphical representations of these solitary wave solutions were provided.
Conclusions:
- Localized spin excitations and solitary waves exist in 1D antiferromagnets with D-M interaction.
- The derived theoretical framework accurately describes the spin dynamics.
- The findings contribute to the understanding of nonlinear phenomena in magnetic systems.
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