Record Details

Title:
Magnonic analog of relativistic $Zitterbewegung$ in an antiferromagnetic spin chain
Affiliation(s):
EuXFEL staff, Other
Author group:
Control and Analysis Software
Topic:
Scientific area:
Abstract:
We theoretically investigate the spin-wave (magnon) excitations in a classical antiferromagnetic spin chain with easy-axis anisotropy. We obtain a Dirac-like equation by linearizing the Landau-Lifshitz-Gilbert equation in this antiferromagnetic system, in contrast to the ferromagnetic system in which a Schrödinger-type equation is derived. The Hamiltonian operator in the Dirac-like equation is a pseudo-Hermitian. We compute and demonstrate relativistic $Zitterbewegung$ (trembling motion) in the antiferromagnetic spin chain by measuring the expectation values of the wave-packet position.
Imprint:
American Physical Society, 2017
Journal Information:
Physical Review B, 96 (2), 024430 (2017)
Related external records:
Language(s):
English
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