Disentanglement of the electronic and lattice parts of the order parameter in a 1D Charge Density Wave system probed by femtosecond spectroscopy

Abstract

We report on the high resolution studies of the temperature (T) dependence of the q=0 phonon spectrum in the quasi one-dimensional charge density wave (CDW) compound K0.3MoO3 utilizing time-resolved optical spectroscopy. Numerous modes that appear below Tc show pronounced T-dependences of their amplitudes, frequencies and dampings. Utilizing the time-dependent Ginzburg-Landau theory we show that these modes result from linear coupling of the electronic part of the order parameter to the 2kF phonons, while the (electronic) CDW amplitude mode is overdamped.

4 pages, 3 figures + supplementary material, accepted for publication in Phys. Rev. Lett

References in corpus (4)

• Dynamics of photoinduced Charge Density Wave-metal phase transition in K0.3MoO3
• Single-particle and collective mode couplings associated with 1- and 2-directional electronic ordering in metallic RTe${}_3$ (R = Ho, Dy, Tb)
• A Raman study of the Charge-Density-Wave State in A${}_{0.3}$MoO${}_3$ (A = K,Rb)
• Coherent amplitudon generation in K_0.3MoO_3 through ultrafast inter-band quasi particle decay

Cited by in corpus (38)

• Electronic crystals: an experimental overview
• Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach
• Dynamical slowing down in an ultrafast photo-induced phase transition
• Ultrafast dynamics of charge density waves in 4Hb-TaSe2 probed by femtosecond electron diffraction
• Momentum dependent ultrafast electron dynamics in antiferromagnetic EuFe2As2
• Ultrafast transmission electron microscopy on dynamic process of a CDW transition in 1T-TaSe2
• Revealing extremely low energy amplitude modes in the charge-density-wave compound LaAgSb${}_2$
• Possible observation of parametrically amplified coherent phasons in K0.3MoO3 using time-resolved extreme-ultraviolet ARPES
• Discovery of the soft electronic modes of the trimeron order in magnetite
• Photoinduced melting of superconductivity in the high-Tc superconductor La2-xSrxCuO4 probed by time-resolved optical and THz techniques
• Amplitude dynamics of charge density wave in LaTe${}_3$: theoretical description of pump-probe experiments
• Classification of Collective Modes in a Charge Density Wave by Momentum-Dependent Modulation of the Electronic Band Structure
• A dynamical stability limit for the charge density wave in K0.3MoO3
• Strong spin-phonon coupling unveiled by coherent phonon oscillations in Ca2RuO4
• Observation and Structural Control of Charge-Density-Waves resonating with Terahertz Frequencies in NdNiO3
• Bypassing the structural bottleneck in the ultrafast melting of electronic order
• Chirality manipulation of ultrafast phase switchings in a correlated CDW-Weyl semimetal
• Ultrafast dynamics in normal and Charge Density Wave phase of 2H-NbSe2
• Origin of Immediate Damping of Coherent Oscillations in Photoinduced Charge Density Wave Transition
• Pressure-Induced Re-entrant transition in NbS3 Phases: Combined Raman Scattering and X-ray Diffraction Study
• Phase-channel dynamics reveal the role of impurities and screening in a quasi-one-dimensional charge-density wave system
• Nonlinear order parameter oscillations and lattice coupling in strongly-driven charge-density-wave systems
• Multi-mode excitation drives disorder during the ultrafast melting of a C4-symmetry-broken phase
• Spectrally-resolved femtosecond reflectivity relaxation dynamics in undoped SDW 122-structure iron based pnictides
• Fluctuation control of non-thermal orbital order
• Accelerated gap collapse in a Slater antiferromagnet
• Inhomogeneous disordering at a photo-induced charge density wave transition
• Observation of anomalous amplitude modes in the kagome metal CsV${}_3$Sb${}_5$
• Abnormal $phase$ flip in coherent phonon oscillations of Ca${}_2$RuO${}_4$
• Ultrafast all-optical manipulation of the charge-density-wave in VTe${}_2$
• Quantum nonlinear phononics route towards nonequilibrium materials engineering: Melting dynamics of a ferrielectric charge density wave
• Evolution of coherent collective modes through consecutive CDW transitions in (PO${}_2$)${}_4$(WO${}_3$)${}_{12}$ mono-phosphate tungsten bronze
• Combined investigation of collective amplitude and phase modes in a quasi-one-dimensional charge-density-wave system over a wide spectral range
• Coherent phonon and unconventional carriers in the magnetic kagome metal Fe${}_3$Sn${}_2$
• Collective modes in the charge-density wave state of K${}_{0.3}$MoO${}_3$: The role of long-range Coulomb interactions revisited
• Multichannel photodiode detector for ultrafast optical spectroscopy
• Highly anisotropic transient optical response of charge density wave order in ZrTe${}_3$
• Bidirectional ultrafast control of charge density waves via phase competition