Spin-induced nonlinearities in the electron magnetohydrodynamic regime
2010 (English)In: New Journal of Physics, ISSN 1367-2630, Vol. 12Article in journal (Refereed) Published
The influence of electron spin on the nonlinear propagation of whistler waves is studied in this paper. For this purpose, a recently developed electron two-fluid model, where the spin-up and spin-down populations are treated as different fluids, is adapted to the electron magnetohydrodynamic (MHD) regime. A nonlinear Schrödinger equation is then derived for the whistler waves and the coefficients of nonlinearity with and without spin effects are compared. The relative importance of spin effects depends on the plasma density and temperature as well as the external magnetic field strength and wave frequency. The significance of our results for various plasmas is discussed.
Place, publisher, year, edition, pages
2010. Vol. 12
IdentifiersURN: urn:nbn:se:umu:diva-33967DOI: 10.1088/1367-2630/12/1/013006ISI: 000273568800003OAI: oai:DiVA.org:umu-33967DiVA: diva2:332141