TY - JOUR
T1 - Signatures of pairing and spin-orbit coupling in correlation functions of Fermi gases
AU - Wu, Chien-Te
AU - Anderson, Brandon M.
AU - Boyack, Rufus
AU - Levin, K.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/6/17
Y1 - 2015/6/17
N2 - We derive expressions for density-density and spin-spin correlation functions in the (greatly enhanced) pseudogap phase of spin-orbit-coupled Fermi gases. Density-density correlation functions are found to be relatively insensitive to the presence of these Rashba spin-orbit effects. To arrive at spin-spin correlation functions we derive new f-sum rules, valid even in the absence of a spin conservation law. Our spin-spin correlation functions are shown to be fully consistent with these f-sum rules. Importantly, they provide a clear signature of the Rashba band structure and separately help to establish the presence of a pseudogap.
AB - We derive expressions for density-density and spin-spin correlation functions in the (greatly enhanced) pseudogap phase of spin-orbit-coupled Fermi gases. Density-density correlation functions are found to be relatively insensitive to the presence of these Rashba spin-orbit effects. To arrive at spin-spin correlation functions we derive new f-sum rules, valid even in the absence of a spin conservation law. Our spin-spin correlation functions are shown to be fully consistent with these f-sum rules. Importantly, they provide a clear signature of the Rashba band structure and separately help to establish the presence of a pseudogap.
UR - http://www.scopus.com/inward/record.url?scp=84934301032&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.91.220504
DO - 10.1103/PhysRevB.91.220504
M3 - Article
AN - SCOPUS:84934301032
SN - 1098-0121
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 220504
ER -