Vitaly Lazarevich Ginzburg
According to Wikipedia, Ginzburg "is a Russian (formerly Soviet) theoretical physicist and astrophysicist, a member of the Russian Academy of Sciences, the successor to Igor Tamm as head of the Department of Theoretical Physics of Academy's physics institute (FIAN), and an outspoken atheist.
"Among his achievements are a partially phenomenological theory of superconductivity (Ginzburg-Landau theory), developed with Landau in 1950, the theory of electromagnetic wave propagation in plasmas such as the ionosphere, and a theory of the origin of cosmic radiation."
