Superconducting optical response of photodoped Mott insulators

TL;DR

This paper explores how ultrafast laser pulses induce a novel $$--paired superconducting phase in Mott insulators and analyzes its optical response, suggesting potential for light-induced superconductivity detection.

Contribution

It provides a theoretical analysis of the origin and optical response of the $$--paired hidden phase in photodoped Mott insulators, linking it to experimental observables.

Findings

Identification of a $$--paired hidden phase in Mott insulators

Prediction of its optical response detectable in pump-probe experiments

Implication for light-induced superconductivity in correlated materials

Abstract

Ultrafast laser pulses can redistribute charges in Mott insulators on extremely short time scales, leading to the fast generation of photocarriers. It has recently been demonstrated that these photocarriers can form a novel $\eta$--paired condensate at low temperatures, featuring a staggered superconducting pairing field. In this conference paper, we discuss the origin of the $\eta$--paired hidden phase and its optical response which may be detected in a pump-probe experiment. The hidden phase may be relevant for possible light-induced superconductivity in Mott insulators.