Fluctuation theory of Rashba Fermi gases: Gaussian and beyond

Vyasanakere, Jayantha P. ; Shenoy, Vijay B. (2015) Fluctuation theory of Rashba Fermi gases: Gaussian and beyond Physical Review B: Condensed Matter and Materials Physics, 92 (12). Article ID 121111(R). ISSN 2469-9950

Full text not available from this repository.

Official URL: https://journals.aps.org/prb/abstract/10.1103/Phys...

Related URL: http://dx.doi.org/10.1103/PhysRevB.92.121111


Fermi gases with generalized Rashba spin-orbit coupling induced by a synthetic gauge field have the potential of realizing many interesting states, such as rashbon condensates and topological phases. Here, we address the key open problem of the fluctuation theory of such systems and demonstrate that beyond-Gaussian effects are essential to capture the finite temperature physics of such systems. We obtain their phase diagram by constructing an approximate non-Gaussian theory. We conclusively establish that spin-orbit coupling can enhance the exponentially small transition temperature (Tc) of a weakly attracting superfluid to the order of the Fermi temperature, paving a pathway towards high Tc superfluids.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:106203
Deposited On:01 Feb 2018 09:54
Last Modified:01 Feb 2018 09:54

Repository Staff Only: item control page