Light-induced hidden odd-frequency order in a model for A${}_3$C${}_{60}$

Abstract

Laser driving in systems with competing or coupled electronic orders can lead to the enhancement of orders, or even to the appearance of hidden phases without an equilibrium analogue. Here we consider a model for A${}_3$C${}_{60}$ which exhibits a unique interplay between conventional and odd-frequency (or composite) orders. In particular, we show that photo-doping of the antiferromagnetic Mott insulating phase, as realized in Cs${}_3$C${}_{60}$, results in a paramagnetic gapped state with broken orbital symmetry. This hidden phase, which does not exist under equilibrium conditions, can be interpreted as an odd-frequency orbital-ordered state, and is conceptually related to the equilibrium Jahn-Teller metal in more weakly correlated compounds. Our study demonstrates the appearance of pure odd-frequency order via the nonthermal melting of magnetic order, and provides an interesting example of nonequilibrium control of electronic orders in a multi-orbital system.

References in corpus (9)

• Continuous-time Monte Carlo methods for quantum impurity models
• Strong electronic correlations from Hund's coupling
• Nonthermal pathways to ultrafast control in quantum materials
• Modeling the Unconventional Superconducting Properties of Expanded A${}_3$C${}_{60}$ Fullerides
• Metastable superfluidity of repulsive fermionic atoms in optical lattices
• Nonthermal symmetry broken states in the strongly interacting Hubbard model
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• Noise Correlations in time- and angular-resolved photoemission spectroscopy
• Entropy and electronic orders of the three-orbital Hubbard model with antiferromagnetic Hund coupling

Cited by in corpus (5)

• Exploring nonequilibrium phases of photo-doped Mott insulators with Generalized Gibbs ensembles
• Photo-induced nonequilibrium states in Mott insulators
• Spin, charge and $\eta$-spin separation in one-dimensional photo-doped Mott insulators
• Non-thermal superconductivity in photo-doped multi-orbital Hubbard systems
• Photoinduced excitonic magnetism in a multiorbital Hubbard system