An exactly solvable BCS-type model of Dirac fermions in three dimension and a new type of FFLO states
Year: 2011
Type: preprint
Abstract: We solve exactly a BCS-type model of Dirac fermions in three dimension (3D) and show that 3D s-wave superconductors with spin-orbit interactions are equivalent to chiral p + ip-wave ones. In the presence of a Zeeman field, it is found that the reduced BCS Hamiltonian is also exactly solvable. Most intriguingly, a new type of FFLO ground state is rigorously revealed, in which the center-of-mass momentum of the fermion pair is proportional to the Zeeman field.
Source: arXiv (Cornell University)
Authors: Qiang Han, Jia Liu, Z. D. Wang
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W304584335