Photoinduced Enhancement of the Charge Density Wave Amplitude

Abstract

Symmetry breaking and the emergence of order is one of the most fascinating phenomena in condensed matter physics. It leads to a plethora of intriguing ground states found in antiferromagnets, Mott insulators, superconductors, and density-wave systems. Exploiting states of matter far from equilibrium can provide even more striking routes to symmetry-lowered, ordered states. Here, we demonstrate for the case of elemental chromium that moderate ultrafast photo-excitation can transiently enhance the charge-density-wave (CDW) amplitude by up to 30% above its equilibrium value, while strong excitations lead to an oscillating, large-amplitude CDW state that persists above the equilibrium transition temperature. Both effects result from dynamic electron-phonon interactions, providing an efficient mechanism to selectively transform a broad excitation of the electronic order into a well defined, long-lived coherent lattice vibration. This mechanism may be exploited to transiently enhance order parameters in other systems with coupled degrees of freedom.

References in corpus (7)

• Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
• Ultrafast transient generation of spin-densitywave order in the normal state of BaFe2As2 driven by coherent lattice vibrations
• Dynamics of photoinduced Charge Density Wave-metal phase transition in K0.3MoO3
• Phonon-induced topological transitions and crossovers in Dirac materials
• Optical freezing of charge motion in an organic conductor
• Chromium at High Pressures: Weak Coupling and Strong Fluctuations in an Itinerant Antiferromagnet
• Condensation of collective charge ordering in Chromium

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