Spin-gradient-driven light amplification in a quantum plasma

Stefanie Braun, Felipe A. Asenjo, Swadesh M. Mahajan

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


It is shown that the gradient "free-energy" contained in equilibrium spin vorticity can cause electromagnetic modes, in particular the light wave, to go unstable in a spin quantum plasma of mobile electrons embedded in a neutralizing ion background. For densities characteristic of both the solid state and very high density astrophysical systems, the growth rates are sufficiently high to overcome the expected collisional damping. Preliminary results suggest a powerful spin-inhomogeneity driven mechanism for stimulating light amplification.

Original languageEnglish
Article number175003
JournalPhysical Review Letters
Issue number17
StatePublished - 24 Oct 2012
Externally publishedYes


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