Conditions for the Spin Wave Nonreciprocity in an Array of Dipolarly Coupled Magnetic Nanopillars

Abstract

It is demonstrated that collective spin waves (SWs) propagating in complex periodic arrays of dipolarly coupled magnetic nanopillars existing in a saturated (single-domain) ground state in a zero bias magnetic field could be nonreciprocal. To guarantee the SW nonreciprocity two conditions should be fulfilled: (i) existence of a nonzero out-of-plane component of the pillars' static magnetization and (ii) a complex periodicity of array's ground state with at least two elements per a primitive cell, if the elements are different, and at least three elements per a primitive cell, if the elements are identical. The obtained results show that coupled arrays of magnetic nanopillars with out-of-plane shape or/and crystallographic anisotropy could be used for the development of miniature unbiased microwave isolators and circulators.

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Document Details

Document Type
Technical Report
Publication Date
Jun 07, 2013
Accession Number
ADA586744

Entities

People

  • Andrei Slavin
  • Elena N. Bankowski
  • Gennadiy Melkov
  • Roman Verba
  • Thomas Meitzler
  • Vasil Tiberkevich

Organizations

  • United States Army Tank Automotive Research, Development and Engineering Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Anisotropy
  • Circular Polarization
  • Crystal Lattices
  • Eigenvalues
  • Frequency
  • Ground State
  • Group Velocity
  • Magnetic Fields
  • Magnetic Materials
  • Magnetization
  • Materials
  • Microwaves
  • Periodic Variations
  • Quantum Properties
  • Spin Waves
  • Two Dimensional
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Superconducting Magnet Technology

Technology Areas

  • Microelectronics