Chiral ground states in a frustrated holographic superconductor

Abstract

Frustration is an important phenomenon in condensed matter physics because it can introduce a new order parameter such as chirality. Towards understanding a mechanism of the frustration in strongly correlated systems, we study a holographic superconductor model with three scalar fields and an interband Josephson coupling, which is important for the frustration. We analyze free energy of solutions of the model to determine ground states. We find chiral ground states, which have nonzero chirality.

Vortex in holographic two-band superfluid/superconductor

“…It would also be very useful to generalize to a JHEP05(2016)011 three-band model. There one can study the existence of chiral and time-reversal symmetry breaking state, interband phase difference induced domain walls, fractional quantum flux vortices [46][47][48] and frustrated superconductors [49]. Lastly, it would be interesting to clarify issues surrounding hidden criticality [50] using a holographic model of multiband superconductivity.…”

P-T phase diagram of a holographic s+p model from Gauss-Bonnet gravity

“…More work concerning the competition of multi order parameters can be found in refs. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35], and see ref. [36] for a recent review on holographic superconductor models.…”