2008/06/05 by G. Brodin, G Brodin, M. Marklund +1 · 17 citations
Engineering · Physics and Astronomy · #Cyclotron #Dust and Plasma Wave Phenomena #Electromagnetic electron wave #Electron #Ion #Magnetic field #Metamaterial #Plasma #Plasma Diagnostics and Applications #Solar and Space Plasma Dynamics #Spin (aerodynamics) #Wavelength #physics.plasm-ph
paper · pdf · doi:10.1088/1367-2630/10/11/115031
published in New Journal of Physics 10(11), 115031 (IOP Publishing) · 10 pages
arxiv created 2008/06/05 · openalex publication_date 2008/11/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
The fluid theory of plasmas is extended to include the properties of electron spin. The linear theory of waves in a magnetized plasma is presented, and it is shown that the spin effects cause a change of the magnetic permeability. Furthermore, by changing the direction of the external magnetic field, the magnetic permeability may become negative. This leads to instabilities in the long wavelength regimes. If these can be controlled, however, the spin plasma becomes a metamaterial for a broad range of frequencies, i.e. above the ion cyclotron frequency but below the electron cyclotron frequency. The consequences of our results are discussed.