TY - JOUR
T1 - Low-energy properties of fractional helical Luttinger liquids
AU - Meng, T.
AU - Fritz, L.
AU - Schuricht, D.
AU - Loss, D.
PY - 2014
Y1 - 2014
N2 - We investigate the low-energy properties of (quasi) helical and fractional helical Luttinger liquids. In particular, we calculate the Drude peak of the optical conductivity, the density of states, as well as charge transport properties of the interacting system with and without attached Fermi liquid leads at small and large (compared to the gap) frequencies. For fractional wires, we find that the low-energy tunneling density of states vanishes. The conductance of a fractional helical Luttinger liquid is noninteger. It is independent of the Luttinger parameters in the wire, despite the intricate mixing of charge and spin degrees of freedom, and only depends on the relative locking of charge and spin degrees of freedom.
AB - We investigate the low-energy properties of (quasi) helical and fractional helical Luttinger liquids. In particular, we calculate the Drude peak of the optical conductivity, the density of states, as well as charge transport properties of the interacting system with and without attached Fermi liquid leads at small and large (compared to the gap) frequencies. For fractional wires, we find that the low-energy tunneling density of states vanishes. The conductance of a fractional helical Luttinger liquid is noninteger. It is independent of the Luttinger parameters in the wire, despite the intricate mixing of charge and spin degrees of freedom, and only depends on the relative locking of charge and spin degrees of freedom.
U2 - 10.1103/PhysRevB.89.045111
DO - 10.1103/PhysRevB.89.045111
M3 - Article
SN - 1098-0121
VL - 89
JO - Physical review. B, Condensed matter and materials physics
JF - Physical review. B, Condensed matter and materials physics
M1 - 045111
ER -