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Title: Exact intrinsic localized excitation of an anisotropic ferromagnetic spin chain in external magnetic field with Gilbert damping, spin current and PT -symmetry

Abstract

In this work, we obtain the exact one-spin intrinsic localized excitation in an anisotropic Heisenberg ferromagnetic spin chain in a constant/variable external magnetic field with Gilbert damping included. We also point out how an appropriate magnitude spin current term in a spin transfer nano-oscillator (STNO) can stabilize the tendency towards damping. Further, we show how this excitation can be sustained in a recently suggested PT -symmetric magnetic nanostructure. We also briefly consider more general spin excitations.

Authors:
 [1]; ORCiD logo [2]
  1. Bharathidasan Univ., Tiruchirapalli (India). Centre for Nonlinear Dynamics
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; National Academy of Sciences India (NASI); Ministry of Science and Technology (India); Council of Scientific and Industrial Research (CSIR) (India); National Board for Higher Mathematics (NBHM) (India)
OSTI Identifier:
1440439
Report Number(s):
LA-UR-17-28815
Journal ID: ISSN 0375-9601
Grant/Contract Number:
AC52-06NA25396; 69/5/2016-17; SERB/F/6717/2017-18; 03/1331/15/EMR-II; 2/48(5)/2015/NBHM(R.P.)/R&D II/14127
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics Letters. A
Additional Journal Information:
Journal Volume: 382; Journal Issue: 28; Journal ID: ISSN 0375-9601
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; Spin torque; Spin transfer nano-oscillator; LLGS equation; PT-symmetry; Spin excitations

Citation Formats

Lakshmanan, Muthusamy, and Saxena, Avadh. Exact intrinsic localized excitation of an anisotropic ferromagnetic spin chain in external magnetic field with Gilbert damping, spin current and PT -symmetry. United States: N. p., 2018. Web. doi:10.1016/j.physleta.2018.04.054.
Lakshmanan, Muthusamy, & Saxena, Avadh. Exact intrinsic localized excitation of an anisotropic ferromagnetic spin chain in external magnetic field with Gilbert damping, spin current and PT -symmetry. United States. doi:10.1016/j.physleta.2018.04.054.
Lakshmanan, Muthusamy, and Saxena, Avadh. Fri . "Exact intrinsic localized excitation of an anisotropic ferromagnetic spin chain in external magnetic field with Gilbert damping, spin current and PT -symmetry". United States. doi:10.1016/j.physleta.2018.04.054.
@article{osti_1440439,
title = {Exact intrinsic localized excitation of an anisotropic ferromagnetic spin chain in external magnetic field with Gilbert damping, spin current and PT -symmetry},
author = {Lakshmanan, Muthusamy and Saxena, Avadh},
abstractNote = {In this work, we obtain the exact one-spin intrinsic localized excitation in an anisotropic Heisenberg ferromagnetic spin chain in a constant/variable external magnetic field with Gilbert damping included. We also point out how an appropriate magnitude spin current term in a spin transfer nano-oscillator (STNO) can stabilize the tendency towards damping. Further, we show how this excitation can be sustained in a recently suggested PT -symmetric magnetic nanostructure. We also briefly consider more general spin excitations.},
doi = {10.1016/j.physleta.2018.04.054},
journal = {Physics Letters. A},
number = 28,
volume = 382,
place = {United States},
year = {Fri Apr 27 00:00:00 EDT 2018},
month = {Fri Apr 27 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on April 27, 2019
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