4.6 Article

Nonlocal damping of helimagnets in one-dimensional interacting electron systems

Journal

PHYSICAL REVIEW B
Volume 92, Issue 9, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.92.094403

Keywords

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Funding

  1. Danish National Research Foundation
  2. Villum Foundation and the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme [PIIF-GA-2013-627838]
  3. Villum Fonden [00007365] Funding Source: researchfish

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We investigate the magnetization relaxation of a one-dimensional helimagnetic system coupled to interacting itinerant electrons. The relaxation is assumed to result from the emission of plasmons, the elementary excitations of the one-dimensional interacting electron system, caused by slow changes of the magnetization profile. This dissipation mechanism leads to a highly nonlocal form of magnetization damping that is strongly dependent on the electron-electron interaction. Forward-scattering processes lead to a spatially constant damping kernel, while backscattering processes produce a spatially oscillating contribution. Due to the nonlocal damping, the thermal fluctuations become spatially correlated over the entire system. We

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